1 Sr Sr⁺ + e⁻ ⇌ Sr(s) Sr⁺ + e⁻ Sr(s) -4.101 1 false 2 Ca Ca⁺ + e⁻ ⇌ Ca(s) Ca⁺ + e⁻ Ca(s) -3.8 1 false 3 Th Th⁴⁺ + e⁻ ⇌ Th³⁺ Th⁴⁺ + e⁻ Th³⁺ -3.6 1 false 4 Pr Pr³⁺ + e⁻ ⇌ Pr²⁺ Pr³⁺ + e⁻ Pr²⁺ -3.1 1 true 5 N 3 N₂(g) + 2 H⁺ + 2 e⁻ ⇌ 2 HN₃(aq) 3 N₂(g) + 2 H⁺ + 2 e⁻ 2 HN₃(aq) -3.09 2 false 6 Li Li⁺ + e⁻ ⇌ Li(s) Li⁺ + e⁻ Li(s) -3.0401 1 false 7 N N₂(g) + 4 H₂O + 2 e⁻ ⇌ 2 NH₂OH(aq) + 2 OH⁻ N₂(g) + 4 H₂O + 2 e⁻ 2 NH₂OH(aq) + 2 OH⁻ -3.04 2 false 8 Cs Cs⁺ + e⁻ ⇌ Cs(s) Cs⁺ + e⁻ Cs(s) -3.026 1 false 9 Ca Ca(OH)₂ + 2 e⁻ ⇌ Ca(s) + 2 OH⁻ Ca(OH)₂ + 2 e⁻ Ca(s) + 2 OH⁻ -3.02 2 false 10 Er Er³⁺ + e⁻ ⇌ Er²⁺ Er³⁺ + e⁻ Er²⁺ -3 1 false 11 Ba Ba(OH)₂ + 2 e⁻ ⇌ Ba(s) + 2 OH⁻ Ba(OH)₂ + 2 e⁻ Ba(s) + 2 OH⁻ -2.99 2 false 12 Rb Rb⁺ + e⁻ ⇌ Rb(s) Rb⁺ + e⁻ Rb(s) -2.98 1 false 13 K K⁺ + e⁻ ⇌ K(s) K⁺ + e⁻ K(s) -2.931 1 false 14 Ba Ba²⁺ + 2 e⁻ ⇌ Ba(s) Ba²⁺ + 2 e⁻ Ba(s) -2.912 2 false 15 La La(OH)₃(s) + 3 e⁻ ⇌ La(s) + 3 OH⁻ La(OH)₃(s) + 3 e⁻ La(s) + 3 OH⁻ -2.9 3 false 16 Fr Fr⁺ + e⁻ ⇌ Fr(s) Fr⁺ + e⁻ Fr(s) -2.9 1 false 17 Sr Sr²⁺ + 2 e⁻ ⇌ Sr(s) Sr²⁺ + 2 e⁻ Sr(s) -2.899 2 false 18 Sr Sr(OH)₂ + 2 e⁻ ⇌ Sr(s) + 2 OH⁻ Sr(OH)₂ + 2 e⁻ Sr(s) + 2 OH⁻ -2.88 2 false 19 Ca Ca²⁺ + 2 e⁻ ⇌ Ca(s) Ca²⁺ + 2 e⁻ Ca(s) -2.868 2 false 20 Li Li⁺ + C₆(s) + e⁻ ⇌ LiC₆(s) Li⁺ + C₆(s) + e⁻ LiC₆(s) -2.84 1 false 21 Eu Eu²⁺ + 2 e⁻ ⇌ Eu(s) Eu²⁺ + 2 e⁻ Eu(s) -2.812 2 false 22 Ra Ra²⁺ + 2 e⁻ ⇌ Ra(s) Ra²⁺ + 2 e⁻ Ra(s) -2.8 2 false 23 Ho Ho³⁺ + e⁻ ⇌ Ho²⁺ Ho³⁺ + e⁻ Ho²⁺ -2.8 1 false 24 Bk Bk³⁺ + e⁻ ⇌ Bk²⁺ Bk³⁺ + e⁻ Bk²⁺ -2.8 1 false 25 Yb Yb²⁺ + 2 e⁻ ⇌ Yb(s) Yb²⁺ + 2 e⁻ Yb(s) -2.76 2 false 26 Na Na⁺ + e⁻ ⇌ Na(s) Na⁺ + e⁻ Na(s) -2.71 1 false 27 Mg Mg⁺ + e⁻ ⇌ Mg(s) Mg⁺ + e⁻ Mg(s) -2.7 1 false 28 Nd Nd³⁺ + e⁻ ⇌ Nd²⁺ Nd³⁺ + e⁻ Nd²⁺ -2.7 1 false 29 Mg Mg(OH)₂ + 2 e⁻ ⇌ Mg(s) + 2 OH⁻ Mg(OH)₂ + 2 e⁻ Mg(s) + 2 OH⁻ -2.69 2 false 30 Sm Sm²⁺ + 2 e⁻ ⇌ Sm(s) Sm²⁺ + 2 e⁻ Sm(s) -2.68 2 false 31 Be Be₂O₃²⁻ + 3 H₂O + 4 e⁻ ⇌ 2 Be(s) + 6 OH⁻ Be₂O₃²⁻ + 3 H₂O + 4 e⁻ 2 Be(s) + 6 OH⁻ -2.63 4 false 32 Pm Pm³⁺ + e⁻ ⇌ Pm²⁺ Pm³⁺ + e⁻ Pm²⁺ -2.6 1 false 33 Dy Dy³⁺ + e⁻ ⇌ Dy²⁺ Dy³⁺ + e⁻ Dy²⁺ -2.6 1 false 34 No No²⁺ + 2 e⁻ ⇌ No(s) No²⁺ + 2 e⁻ No(s) -2.5 2 false 35 Hf HfO(OH)₂ + H₂O + 4 e⁻ ⇌ Hf(s) + 4 OH⁻ HfO(OH)₂ + H₂O + 4 e⁻ Hf(s) + 4 OH⁻ -2.5 4 false 36 Th Th(OH)₄ + 4 e⁻ ⇌ Th(s) + 4 OH⁻ Th(OH)₄ + 4 e⁻ Th(s) + 4 OH⁻ -2.48 4 false 37 Md Md²⁺ + 2 e⁻ ⇌ Md(s) Md²⁺ + 2 e⁻ Md(s) -2.4 2 false 38 Tm Tm²⁺ + 2 e⁻ ⇌ Tm(s) Tm²⁺ + 2 e⁻ Tm(s) -2.4 2 false 39 La La³⁺ + 3 e⁻ ⇌ La(s) La³⁺ + 3 e⁻ La(s) -2.379 3 false 40 Y Y³⁺ + 3 e⁻ ⇌ Y(s) Y³⁺ + 3 e⁻ Y(s) -2.372 3 false 41 Mg Mg²⁺ + 2 e⁻ ⇌ Mg(s) Mg²⁺ + 2 e⁻ Mg(s) -2.372 2 false 42 Sc ScF₃(aq) + 3 H⁺ + 3 e⁻ ⇌ Sc(s) + 3 HF(aq) ScF₃(aq) + 3 H⁺ + 3 e⁻ Sc(s) + 3 HF(aq) -2.37 3 false 43 Zr ZrO(OH)₂(s) + H₂O + 4 e⁻ ⇌ Zr(s) + 4 OH⁻ ZrO(OH)₂(s) + H₂O + 4 e⁻ Zr(s) + 4 OH⁻ -2.36 4 false 44 Pr Pr³⁺ + 3 e⁻ ⇌ Pr(s) Pr³⁺ + 3 e⁻ Pr(s) -2.353 3 false 45 Ce Ce³⁺ + 3 e⁻ ⇌ Ce(s) Ce³⁺ + 3 e⁻ Ce(s) -2.336 3 false 46 Er Er³⁺ + 3 e⁻ ⇌ Er(s) Er³⁺ + 3 e⁻ Er(s) -2.331 3 false 47 Ho Ho³⁺ + 3 e⁻ ⇌ Ho(s) Ho³⁺ + 3 e⁻ Ho(s) -2.33 3 false 48 Al H₂AlO₃⁻ + H₂O + 3 e⁻ ⇌ Al(s) + 4 OH⁻ H₂AlO₃⁻ + H₂O + 3 e⁻ Al(s) + 4 OH⁻ -2.33 3 false 49 Nd Nd³⁺ + 3 e⁻ ⇌ Nd(s) Nd³⁺ + 3 e⁻ Nd(s) -2.323 3 false 50 Tm Tm³⁺ + 3 e⁻ ⇌ Tm(s) Tm³⁺ + 3 e⁻ Tm(s) -2.319 3 false 51 Al Al(OH)₃(s) + 3 e⁻ ⇌ Al(s) + 3 OH⁻ Al(OH)₃(s) + 3 e⁻ Al(s) + 3 OH⁻ -2.31 3 false 52 Sm Sm³⁺ + 3 e⁻ ⇌ Sm(s) Sm³⁺ + 3 e⁻ Sm(s) -2.304 3 false 53 Fm Fm²⁺ + 2 e⁻ ⇌ Fm(s) Fm²⁺ + 2 e⁻ Fm(s) -2.3 2 false 54 Am Am³⁺ + e⁻ ⇌ Am²⁺ Am³⁺ + e⁻ Am²⁺ -2.3 1 false 55 Dy Dy³⁺ + 3 e⁻ ⇌ Dy(s) Dy³⁺ + 3 e⁻ Dy(s) -2.295 3 false 56 Lu Lu³⁺ + 3 e⁻ ⇌ Lu(s) Lu³⁺ + 3 e⁻ Lu(s) -2.28 3 false 57 Sc ScF₂⁺ + 2 H⁺ + 3 e⁻ ⇌ Sc(s) + 2 HF(l) ScF₂⁺ + 2 H⁺ + 3 e⁻ Sc(s) + 2 HF(l) -2.28 3 false 58 Tb Tb³⁺ + 3 e⁻ ⇌ Tb(s) Tb³⁺ + 3 e⁻ Tb(s) -2.28 3 false 59 Gd Gd³⁺ + 3 e⁻ ⇌ Gd(s) Gd³⁺ + 3 e⁻ Gd(s) -2.279 3 false 60 H H₂(g) + 2 e⁻ ⇌ 2 H⁻ H₂(g) + 2 e⁻ 2 H⁻ -2.23 2 false 61 Es Es²⁺ + 2 e⁻ ⇌ Es(s) Es²⁺ + 2 e⁻ Es(s) -2.23 2 false 62 Pm Pm²⁺ + 2 e⁻ ⇌ Pm(s) Pm²⁺ + 2 e⁻ Pm(s) -2.2 2 false 63 Tm Tm³⁺ + e⁻ ⇌ Tm²⁺ Tm³⁺ + e⁻ Tm²⁺ -2.2 1 false 64 Dy Dy²⁺ + 2 e⁻ ⇌ Dy(s) Dy²⁺ + 2 e⁻ Dy(s) -2.2 2 false 65 Ac Ac³⁺ + 3 e⁻ ⇌ Ac(s) Ac³⁺ + 3 e⁻ Ac(s) -2.2 3 false 66 Yb Yb³⁺ + 3 e⁻ ⇌ Yb(s) Yb³⁺ + 3 e⁻ Yb(s) -2.19 3 false 67 Cf Cf²⁺ + 2 e⁻ ⇌ Cf(s) Cf²⁺ + 2 e⁻ Cf(s) -2.12 2 false 68 Nd Nd²⁺ + 2 e⁻ ⇌ Nd(s) Nd²⁺ + 2 e⁻ Nd(s) -2.1 2 false 69 Ho Ho²⁺ + 2 e⁻ ⇌ Ho(s) Ho²⁺ + 2 e⁻ Ho(s) -2.1 2 false 70 Sc Sc³⁺ + 3 e⁻ ⇌ Sc(s) Sc³⁺ + 3 e⁻ Sc(s) -2.077 3 false 71 Al AlF₆³⁻ + 3 e⁻ ⇌ Al(s) + 6 F⁻ AlF₆³⁻ + 3 e⁻ Al(s) + 6 F⁻ -2.069 3 false 72 Cm Cm³⁺ + 3 e⁻ ⇌ Cm(s) Cm³⁺ + 3 e⁻ Cm(s) -2.04 3 false 73 Pu Pu³⁺ + 3 e⁻ ⇌ Pu(s) Pu³⁺ + 3 e⁻ Pu(s) -2.031 3 false 74 Pr Pr²⁺ + 2 e⁻ ⇌ Pr(s) Pr²⁺ + 2 e⁻ Pr(s) -2 2 false 75 Er Er²⁺ + 2 e⁻ ⇌ Er(s) Er²⁺ + 2 e⁻ Er(s) -2 2 false 76 Eu Eu³⁺ + 3 e⁻ ⇌ Eu(s) Eu³⁺ + 3 e⁻ Eu(s) -1.991 3 false 77 Lr Lr³⁺ + 3 e⁻ ⇌ Lr(s) Lr³⁺ + 3 e⁻ Lr(s) -1.96 3 false 78 Cf Cf³⁺ + 3 e⁻ ⇌ Cf(s) Cf³⁺ + 3 e⁻ Cf(s) -1.94 3 false 79 Es Es³⁺ + 3 e⁻ ⇌ Es(s) Es³⁺ + 3 e⁻ Es(s) -1.91 3 false 80 Pa Pa⁴⁺ + e⁻ ⇌ Pa³⁺ Pa⁴⁺ + e⁻ Pa³⁺ -1.9 1 false 81 Am Am²⁺ + 2 e⁻ ⇌ Am(s) Am²⁺ + 2 e⁻ Am(s) -1.9 2 false 82 Th Th⁴⁺ + 4 e⁻ ⇌ Th(s) Th⁴⁺ + 4 e⁻ Th(s) -1.899 4 false 83 Fm Fm³⁺ + 3 e⁻ ⇌ Fm(s) Fm³⁺ + 3 e⁻ Fm(s) -1.89 3 false 84 N N₂(g) + 2 H₂O + 4 H⁺ + 2 e⁻ ⇌ 2 NH₃OH⁺ N₂(g) + 2 H₂O + 4 H⁺ + 2 e⁻ 2 NH₃OH⁺ -1.87 2 false 85 Np Np³⁺ + 3 e⁻ ⇌ Np(s) Np³⁺ + 3 e⁻ Np(s) -1.856 3 false 86 Be Be²⁺ + 2 e⁻ ⇌ Be(s) Be²⁺ + 2 e⁻ Be(s) -1.847 2 false 87 P H₂PO₂⁻ + e⁻ ⇌ P(s) + 2 OH⁻ H₂PO₂⁻ + e⁻ P(s) + 2 OH⁻ -1.82 1 false 88 U U³⁺ + 3 e⁻ ⇌ U(s) U³⁺ + 3 e⁻ U(s) -1.798 3 false 89 Sr Sr²⁺ + 2 e⁻ ⇌ Sr(Hg) Sr²⁺ + 2 e⁻ Sr(Hg) -1.793 2 false 90 B H₂BO₃⁻ + H₂O + 3 e⁻ ⇌ B(s) + 4 OH⁻ H₂BO₃⁻ + H₂O + 3 e⁻ B(s) + 4 OH⁻ -1.79 3 false 91 Th ThO₂ + 4 H⁺ + 4 e⁻ ⇌ Th(s) + 2 H₂O ThO₂ + 4 H⁺ + 4 e⁻ Th(s) + 2 H₂O -1.789 4 false 92 Hf HfO²⁺ + 2 H⁺ + 4 e⁻ ⇌ Hf(s) + H₂O HfO²⁺ + 2 H⁺ + 4 e⁻ Hf(s) + H₂O -1.724 4 false 93 P HPO₃²⁻ + 2 H₂O + 3 e⁻ ⇌ P(s) + 5 OH⁻ HPO₃²⁻ + 2 H₂O + 3 e⁻ P(s) + 5 OH⁻ -1.71 3 false 94 Si SiO₃²⁻ + 3 H₂O + 4 e⁻ ⇌ Si(s) + 6 OH⁻ SiO₃²⁻ + 3 H₂O + 4 e⁻ Si(s) + 6 OH⁻ -1.697 4 false 95 Al Al³⁺ + 3 e⁻ ⇌ Al(s) Al³⁺ + 3 e⁻ Al(s) -1.662 3 false 96 Ti Ti²⁺ + 2 e⁻ ⇌ Ti(s) Ti²⁺ + 2 e⁻ Ti(s) -1.63 2 false 97 Zr ZrO₂(s) + 4 H⁺ + 4 e⁻ ⇌ Zr(s) + 2 H₂O ZrO₂(s) + 4 H⁺ + 4 e⁻ Zr(s) + 2 H₂O -1.553 4 false 98 Zr Zr⁴⁺ + 4 e⁻ ⇌ Zr(s) Zr⁴⁺ + 4 e⁻ Zr(s) -1.45 4 false 99 Ti Ti³⁺ + 3 e⁻ ⇌ Ti(s) Ti³⁺ + 3 e⁻ Ti(s) -1.37 3 false 100 Ti TiO(s) + 2 H⁺ + 2 e⁻ ⇌ Ti(s) + H₂O TiO(s) + 2 H⁺ + 2 e⁻ Ti(s) + H₂O -1.31 2 false 101 B [B(OH)₄]⁻ + 4 H₂O + 8 e⁻ ⇌ BH₄⁻ + 8 OH⁻ [B(OH)₄]⁻ + 4 H₂O + 8 e⁻ BH₄⁻ + 8 OH⁻ -1.24 8 false 102 Ti Ti₂O₃(s) + 2 H⁺ + 2 e⁻ ⇌ 2 TiO(s) + H₂O Ti₂O₃(s) + 2 H⁺ + 2 e⁻ 2 TiO(s) + H₂O -1.23 2 false 103 Ga [Ga(OH)₄]⁻ + 3 e⁻ ⇌ Ga(s) + 3 OH⁻ [Ga(OH)₄]⁻ + 3 e⁻ Ga(s) + 3 OH⁻ -1.22 3 false 104 Zn [Zn(OH)₄]²⁻ + 2 e⁻ ⇌ Zn(s) + 4 OH⁻ [Zn(OH)₄]²⁻ + 2 e⁻ Zn(s) + 4 OH⁻ -1.199 2 false 105 Mn Mn²⁺ + 2 e⁻ ⇌ Mn(s) Mn²⁺ + 2 e⁻ Mn(s) -1.185 2 false 106 Fe [Fe(CN)₆]⁴⁻ + 6 H⁺ + 2 e⁻ ⇌ Fe(s) + 6 HCN(aq) [Fe(CN)₆]⁴⁻ + 6 H⁺ + 2 e⁻ Fe(s) + 6 HCN(aq) -1.16 2 false 107 C C(s) + 3 H₂O + 2 e⁻ ⇌ CH₃OH(l) + 2 OH⁻ C(s) + 3 H₂O + 2 e⁻ CH₃OH(l) + 2 OH⁻ -1.148 2 false 108 Cr [Cr(CN)₆]³⁻ + e⁻ ⇌ [Cr(CN)₆]⁴⁻ [Cr(CN)₆]³⁻ + e⁻ [Cr(CN)₆]⁴⁻ -1.143 1 false 109 Te Te(s) + 2 e⁻ ⇌ Te²⁻ Te(s) + 2 e⁻ Te²⁻ -1.143 2 false 110 V V²⁺ + 2 e⁻ ⇌ V(s) V²⁺ + 2 e⁻ V(s) -1.13 2 false 111 Nb Nb³⁺ + 3 e⁻ ⇌ Nb(s) Nb³⁺ + 3 e⁻ Nb(s) -1.099 3 false 112 Sn Sn(s) + 4 H⁺ + 4 e⁻ ⇌ SnH₄(g) Sn(s) + 4 H⁺ + 4 e⁻ SnH₄(g) -1.07 4 false 113 Po Po(s) + 2 e⁻ ⇌ Po²⁻ Po(s) + 2 e⁻ Po²⁻ -1.021 2 false 114 Cr [Cr(edta)(H₂O)]⁻ + e⁻ ⇌ [Cr(edta)(H₂O)]²⁻ [Cr(edta)(H₂O)]⁻ + e⁻ [Cr(edta)(H₂O)]²⁻ -0.99 1 false 115 P 2 H₃PO₄(aq) + 2 H⁺ + 2 e⁻ ⇌ (H₂PO₃)₂(aq) + H₂O 2 H₃PO₄(aq) + 2 H⁺ + 2 e⁻ (H₂PO₃)₂(aq) + H₂O -0.933 2 false 116 C CO₃²⁻ + 3 H⁺ + 2 e⁻ ⇌ HCO₂⁻ + H₂O CO₃²⁻ + 3 H⁺ + 2 e⁻ HCO₂⁻ + H₂O -0.93 2 false 117 Ti TiO²⁺ + 2 H⁺ + 4 e⁻ ⇌ Ti(s) + H₂O TiO²⁺ + 2 H⁺ + 4 e⁻ Ti(s) + H₂O -0.93 4 false 118 Si SiO₂(quartz) + 4 H⁺ + 4 e⁻ ⇌ Si(s) + 2 H₂O SiO₂(quartz) + 4 H⁺ + 4 e⁻ Si(s) + 2 H₂O -0.909 4 false 119 Cr Cr²⁺ + 2 e⁻ ⇌ Cr(s) Cr²⁺ + 2 e⁻ Cr(s) -0.9 2 false 120 B B(OH)₃(aq) + 3 H⁺ + 3 e⁻ ⇌ B(s) + 3 H₂O B(OH)₃(aq) + 3 H⁺ + 3 e⁻ B(s) + 3 H₂O -0.89 3 false 121 Fe Fe(OH)₂(s) + 2 e⁻ ⇌ Fe(s) + 2 OH⁻ Fe(OH)₂(s) + 2 e⁻ Fe(s) + 2 OH⁻ -0.89 2 false 122 Fe Fe₂O₃(s) + 3 H₂O + 2 e⁻ ⇌ 2 Fe(OH)₂(s) + 2 OH⁻ Fe₂O₃(s) + 3 H₂O + 2 e⁻ 2 Fe(OH)₂(s) + 2 OH⁻ -0.86 2 false 123 H 2 H₂O + 2 e⁻ ⇌ H₂(g) + 2 OH⁻ 2 H₂O + 2 e⁻ H₂(g) + 2 OH⁻ -0.8277 2 false 124 Bi Bi(s) + 3 H⁺ + 3 e⁻ ⇌ BiH₃ Bi(s) + 3 H⁺ + 3 e⁻ BiH₃ -0.8 3 false 125 Zn Zn²⁺ + 2 e⁻ ⇌ Zn(Hg) Zn²⁺ + 2 e⁻ Zn(Hg) -0.7628 2 false 126 Zn Zn²⁺ + 2 e⁻ ⇌ Zn(s) Zn²⁺ + 2 e⁻ Zn(s) -0.7618 2 false 127 Ta Ta₂O₅(s) + 10 H⁺ + 10 e⁻ ⇌ 2 Ta(s) + 5 H₂O Ta₂O₅(s) + 10 H⁺ + 10 e⁻ 2 Ta(s) + 5 H₂O -0.75 10 false 128 Cr Cr³⁺ + 3 e⁻ ⇌ Cr(s) Cr³⁺ + 3 e⁻ Cr(s) -0.74 3 false 129 Te 2 Te(s) + 2 e⁻ ⇌ Te₂²⁻ 2 Te(s) + 2 e⁻ Te₂²⁻ -0.74 2 false 130 Ni Ni(OH)₂(s) + 2 e⁻ ⇌ Ni(s) + 2 OH⁻ Ni(OH)₂(s) + 2 e⁻ Ni(s) + 2 OH⁻ -0.72 2 false 131 Nb Nb₂O₅(s) + 10 H⁺ + 10 e⁻ ⇌ 2 Nb(s) + 5 H₂O Nb₂O₅(s) + 10 H⁺ + 10 e⁻ 2 Nb(s) + 5 H₂O -0.7 10 false 132 Ag Ag₂S(s) + 2 e⁻ ⇌ 2 Ag(s) + S²⁻ Ag₂S(s) + 2 e⁻ 2 Ag(s) + S²⁻ -0.69 2 false 133 Te Te₂²⁻ + 4 H⁺ + 2 e⁻ ⇌ 2 H₂Te(g) Te₂²⁻ + 4 H⁺ + 2 e⁻ 2 H₂Te(g) -0.64 2 false 134 Sb [Sb(OH)₄]⁻ + 3 e⁻ ⇌ Sb(s) + 4 OH⁻ [Sb(OH)₄]⁻ + 3 e⁻ Sb(s) + 4 OH⁻ -0.639 3 false 135 Au [Au(CN)₂]⁻ + e⁻ ⇌ Au(s) + 2 CN⁻ [Au(CN)₂]⁻ + e⁻ Au(s) + 2 CN⁻ -0.6 1 false 136 Ta Ta³⁺ + 3 e⁻ ⇌ Ta(s) Ta³⁺ + 3 e⁻ Ta(s) -0.6 3 false 137 Pb PbO(s) + H₂O + 2 e⁻ ⇌ Pb(s) + 2 OH⁻ PbO(s) + H₂O + 2 e⁻ Pb(s) + 2 OH⁻ -0.58 2 false 138 Ti 2 TiO₂(s) + 2 H⁺ + 2 e⁻ ⇌ Ti₂O₃(s) + H₂O 2 TiO₂(s) + 2 H⁺ + 2 e⁻ Ti₂O₃(s) + H₂O -0.56 2 false 139 Ga Ga³⁺ + 3 e⁻ ⇌ Ga(s) Ga³⁺ + 3 e⁻ Ga(s) -0.549 3 false 140 U U⁴⁺ + e⁻ ⇌ U³⁺ U⁴⁺ + e⁻ U³⁺ -0.52 1 false 141 P H₃PO₂(aq) + H⁺ + e⁻ ⇌ P(white) + 2 H₂O H₃PO₂(aq) + H⁺ + e⁻ P(white) + 2 H₂O -0.508 1 false 142 P H₃PO₃(aq) + 2 H⁺ + 2 e⁻ ⇌ H₃PO₂(aq) + H₂O H₃PO₃(aq) + 2 H⁺ + 2 e⁻ H₃PO₂(aq) + H₂O -0.499 2 false 143 Ni NiO₂(s) + 2 H₂O + 2 e⁻ ⇌ Ni(OH)₂(s) + 2 OH⁻ NiO₂(s) + 2 H₂O + 2 e⁻ Ni(OH)₂(s) + 2 OH⁻ -0.49 2 false 144 Sb [Sb(OH)₆]⁻ + 2 e⁻ ⇌ [Sb(OH)₄]⁻ + 2 OH⁻ [Sb(OH)₆]⁻ + 2 e⁻ [Sb(OH)₄]⁻ + 2 OH⁻ -0.465 2 false 145 P H₃PO₃(aq) + 3 H⁺ + 3 e⁻ ⇌ P(red) + 3 H₂O H₃PO₃(aq) + 3 H⁺ + 3 e⁻ P(red) + 3 H₂O -0.454 3 false 146 Bi Bi₂O₃(s) + 3 H₂O + 6 e⁻ ⇌ Bi(s) + 6 OH⁻ Bi₂O₃(s) + 3 H₂O + 6 e⁻ Bi(s) + 6 OH⁻ -0.452 6 false 147 Ta TaF₇²⁻ + 7 H⁺ + 5 e⁻ ⇌ Ta(s) + 7 HF(l) TaF₇²⁻ + 7 H⁺ + 5 e⁻ Ta(s) + 7 HF(l) -0.45 5 false 148 In In³⁺ + 2 e⁻ ⇌ In⁺ In³⁺ + 2 e⁻ In⁺ -0.444 2 false 149 Cu [Cu(CN)₂]⁻ + e⁻ ⇌ Cu(s) + 2 CN⁻ [Cu(CN)₂]⁻ + e⁻ Cu(s) + 2 CN⁻ -0.44 1 false 150 Fe Fe²⁺ + 2 e⁻ ⇌ Fe(s) Fe²⁺ + 2 e⁻ Fe(s) -0.44 2 false 151 C 2 CO₂(g) + 2 H⁺ + 2 e⁻ ⇌ HOOCCOOH(aq) 2 CO₂(g) + 2 H⁺ + 2 e⁻ HOOCCOOH(aq) -0.43 2 false 152 Cr Cr³⁺ + e⁻ ⇌ Cr²⁺ Cr³⁺ + e⁻ Cr²⁺ -0.407 1 false 153 Cd Cd²⁺ + 2 e⁻ ⇌ Cd(s) Cd²⁺ + 2 e⁻ Cd(s) -0.4 2 false 154 Ti Ti³⁺ + e⁻ ⇌ Ti²⁺ Ti³⁺ + e⁻ Ti²⁺ -0.37 1 false 155 Cu Cu₂O(s) + H₂O + 2 e⁻ ⇌ 2 Cu(s) + 2 OH⁻ Cu₂O(s) + H₂O + 2 e⁻ 2 Cu(s) + 2 OH⁻ -0.36 2 false 156 Pb PbSO₄(s) + 2 e⁻ ⇌ Pb(s) + SO₄²⁻ PbSO₄(s) + 2 e⁻ Pb(s) + SO₄²⁻ -0.3588 2 false 157 Pb PbSO₄(s) + 2 e⁻ ⇌ Pb(Hg) + SO₄²⁻ PbSO₄(s) + 2 e⁻ Pb(Hg) + SO₄²⁻ -0.3505 2 false 158 Eu Eu³⁺ + e⁻ ⇌ Eu²⁺ Eu³⁺ + e⁻ Eu²⁺ -0.35 1 false 159 In In³⁺ + 3 e⁻ ⇌ In(s) In³⁺ + 3 e⁻ In(s) -0.34 3 false 160 Tl Tl⁺ + e⁻ ⇌ Tl(s) Tl⁺ + e⁻ Tl(s) -0.34 1 false 161 Ge Ge(s) + 4 H⁺ + 4 e⁻ ⇌ GeH₄(g) Ge(s) + 4 H⁺ + 4 e⁻ GeH₄(g) -0.29 4 false 162 Co Co²⁺ + 2 e⁻ ⇌ Co(s) Co²⁺ + 2 e⁻ Co(s) -0.28 2 false 163 P H₃PO₄(aq) + 2 H⁺ + 2 e⁻ ⇌ H₃PO₃(aq) + H₂O H₃PO₄(aq) + 2 H⁺ + 2 e⁻ H₃PO₃(aq) + H₂O -0.276 2 false 165 V V³⁺ + e⁻ ⇌ V²⁺ V³⁺ + e⁻ V²⁺ -0.26 1 false 166 Ni Ni²⁺ + 2 e⁻ ⇌ Ni(s) Ni²⁺ + 2 e⁻ Ni(s) -0.257 2 false 167 S 2 HSO₄⁻ + 2 H⁺ + 2 e⁻ ⇌ S₂O₆²⁻ + 2 H₂O 2 HSO₄⁻ + 2 H⁺ + 2 e⁻ S₂O₆²⁻ + 2 H₂O -0.253 2 false 168 As As(s) + 3 H⁺ + 3 e⁻ ⇌ AsH₃(g) As(s) + 3 H⁺ + 3 e⁻ AsH₃(g) -0.23 3 false 169 N N₂(g) + 5 H⁺ + 4 e⁻ ⇌ N₂H₅⁺ N₂(g) + 5 H⁺ + 4 e⁻ N₂H₅⁺ -0.23 4 false 170 Ga Ga⁺ + e⁻ ⇌ Ga(s) Ga⁺ + e⁻ Ga(s) -0.2 1 false 171 Ag AgI(s) + e⁻ ⇌ Ag(s) + I⁻ AgI(s) + e⁻ Ag(s) + I⁻ -0.15224 1 false 172 Ge GeO₂(s) + 4 H⁺ + 4 e⁻ ⇌ Ge(s) + 2 H₂O GeO₂(s) + 4 H⁺ + 4 e⁻ Ge(s) + 2 H₂O -0.15 4 false 173 Mo MoO₂(s) + 4 H⁺ + 4 e⁻ ⇌ Mo(s) + 2 H₂O MoO₂(s) + 4 H⁺ + 4 e⁻ Mo(s) + 2 H₂O -0.15 4 false 174 Si Si(s) + 4 H⁺ + 4 e⁻ ⇌ SiH₄(g) Si(s) + 4 H⁺ + 4 e⁻ SiH₄(g) -0.14 4 false 175 Sn Sn²⁺ + 2 e⁻ ⇌ Sn(s) Sn²⁺ + 2 e⁻ Sn(s) -0.13 2 false 176 O O₂(g) + H⁺ + e⁻ ⇌ HO• ₂(aq) O₂(g) + H⁺ + e⁻ HO• ₂(aq) -0.13 1 false 177 In In⁺ + e⁻ ⇌ In(s) In⁺ + e⁻ In(s) -0.126 1 false 178 Pb Pb²⁺ + 2 e⁻ ⇌ Pb(s) Pb²⁺ + 2 e⁻ Pb(s) -0.126 2 false 179 W WO₂(s) + 4 H⁺ + 4 e⁻ ⇌ W(s) + 2 H₂O WO₂(s) + 4 H⁺ + 4 e⁻ W(s) + 2 H₂O -0.12 4 false 180 Ge GeO₂(s) + 2 H⁺ + 2 e⁻ ⇌ GeO(s) + H₂O GeO₂(s) + 2 H⁺ + 2 e⁻ GeO(s) + H₂O -0.118 2 false 181 P P(red) + 3 H⁺ + 3 e⁻ ⇌ PH₃(g) P(red) + 3 H⁺ + 3 e⁻ PH₃(g) -0.111 3 false 182 C CO₂(g) + 2 H⁺ + 2 e⁻ ⇌ HCOOH(aq) CO₂(g) + 2 H⁺ + 2 e⁻ HCOOH(aq) -0.11 2 false 183 Se Se(s) + 2 H⁺ + 2 e⁻ ⇌ H₂Se(g) Se(s) + 2 H⁺ + 2 e⁻ H₂Se(g) -0.11 2 false 184 C CO₂(g) + 2 H⁺ + 2 e⁻ ⇌ CO(g) + H₂O CO₂(g) + 2 H⁺ + 2 e⁻ CO(g) + H₂O -0.11 2 false 185 Sn α-SnO(s) + 2 H⁺ + 2 e⁻ ⇌ Sn(s) + H₂O α-SnO(s) + 2 H⁺ + 2 e⁻ Sn(s) + H₂O -0.104 2 false 186 Cu [Cu(NH₃)₂]⁺ + e⁻ ⇌ Cu(s) + 2 NH₃(aq) [Cu(NH₃)₂]⁺ + e⁻ Cu(s) + 2 NH₃(aq) -0.1 1 false 187 Nb Nb₂O₅(s) + 10 H⁺ + 4 e⁻ ⇌ 2 Nb³⁺ + 5 H₂O Nb₂O₅(s) + 10 H⁺ + 4 e⁻ 2 Nb³⁺ + 5 H₂O -0.1 4 false 188 W WO₃(aq) + 6 H⁺ + 6 e⁻ ⇌ W(s) + 3 H₂O WO₃(aq) + 6 H⁺ + 6 e⁻ W(s) + 3 H₂O -0.09 6 false 189 Sn SnO₂(s) + 2 H⁺ + 2 e⁻ ⇌ α-SnO(s) + H₂O SnO₂(s) + 2 H⁺ + 2 e⁻ α-SnO(s) + H₂O -0.088 2 false 190 Fe Fe₃O₄(s) + 8 H⁺ + 8 e⁻ ⇌ 3 Fe(s) + 4 H₂O Fe₃O₄(s) + 8 H⁺ + 8 e⁻ 3 Fe(s) + 4 H₂O -0.085 8 false 191 V VOH²⁺ + H⁺ + e⁻ ⇌ V²⁺ + H₂O VOH²⁺ + H⁺ + e⁻ V²⁺ + H₂O -0.082 1 false 192 P P(white) + 3 H⁺ + 3 e⁻ ⇌ PH₃(g) P(white) + 3 H⁺ + 3 e⁻ PH₃(g) -0.063 3 false 193 N N₂O(g) + H₂O + 6 H⁺ + 4 e⁻ ⇌ 2 NH₃OH⁺ N₂O(g) + H₂O + 6 H⁺ + 4 e⁻ 2 NH₃OH⁺ -0.05 4 false 194 Fe Fe³⁺ + 3 e⁻ ⇌ Fe(s) Fe³⁺ + 3 e⁻ Fe(s) -0.04 3 false 195 C HCOOH(aq) + 2 H⁺ + 2 e⁻ ⇌ HCHO(aq) + H₂O HCOOH(aq) + 2 H⁺ + 2 e⁻ HCHO(aq) + H₂O -0.034 2 false 196 H 2 H⁺ + 2 e⁻ ⇌ H₂(g) 2 H⁺ + 2 e⁻ H₂(g) 0 2 false 197 Ag AgBr(s) + e⁻ ⇌ Ag(s) + Br⁻ AgBr(s) + e⁻ Ag(s) + Br⁻ 0.07133 1 false 198 S S₄O₆²⁻ + 2 e⁻ ⇌ 2 S₂O₃²⁻ S₄O₆²⁻ + 2 e⁻ 2 S₂O₃²⁻ 0.08 2 false 199 N N₂(g) + 2 H₂O + 6 H⁺ + 6 e⁻ ⇌ 2 NH₄OH(aq) N₂(g) + 2 H₂O + 6 H⁺ + 6 e⁻ 2 NH₄OH(aq) 0.092 6 false 200 Hg HgO(s) + H₂O + 2 e⁻ ⇌ Hg(l) + 2 OH⁻ HgO(s) + H₂O + 2 e⁻ Hg(l) + 2 OH⁻ 0.0977 2 false 201 Cu [Cu(NH₃)₄]²⁺ + e⁻ ⇌ [Cu(NH₃)₂]⁺ + 2 NH₃(aq) [Cu(NH₃)₄]²⁺ + e⁻ [Cu(NH₃)₂]⁺ + 2 NH₃(aq) 0.1 1 false 202 Ru [Ru(NH₃)₆]³⁺ + e⁻ ⇌ [Ru(NH₃)₆]²⁺ [Ru(NH₃)₆]³⁺ + e⁻ [Ru(NH₃)₆]²⁺ 0.1 1 false 203 N N₂H₄(aq) + 4 H₂O + 2 e⁻ ⇌ 2 NH₄⁺ + 4 OH⁻ N₂H₄(aq) + 4 H₂O + 2 e⁻ 2 NH₄⁺ + 4 OH⁻ 0.11 2 false 204 Mo H₂MoO₄(aq) + 6 H⁺ + 6 e⁻ ⇌ Mo(s) + 4 H₂O H₂MoO₄(aq) + 6 H⁺ + 6 e⁻ Mo(s) + 4 H₂O 0.11 6 false 205 Ge Ge⁴⁺ + 4 e⁻ ⇌ Ge(s) Ge⁴⁺ + 4 e⁻ Ge(s) 0.12 4 false 206 C C(s) + 4 H⁺ + 4 e⁻ ⇌ CH₄(g) C(s) + 4 H⁺ + 4 e⁻ CH₄(g) 0.13 4 false 207 C HCHO(aq) + 2 H⁺ + 2 e⁻ ⇌ CH₃OH(aq) HCHO(aq) + 2 H⁺ + 2 e⁻ CH₃OH(aq) 0.13 2 false 208 S S(s) + 2 H⁺ + 2 e⁻ ⇌ H₂S(g) S(s) + 2 H⁺ + 2 e⁻ H₂S(g) 0.144 2 false 209 Sb Sb₂O₃(s) + 6 H⁺ + 6 e⁻ ⇌ 2 Sb(s) + 3 H₂O Sb₂O₃(s) + 6 H⁺ + 6 e⁻ 2 Sb(s) + 3 H₂O 0.15 6 false 210 Sn Sn⁴⁺ + 2 e⁻ ⇌ Sn²⁺ Sn⁴⁺ + 2 e⁻ Sn²⁺ 0.151 2 false 211 S HSO₄⁻ + 3 H⁺ + 2 e⁻ ⇌ SO₂(aq) + 2 H₂O HSO₄⁻ + 3 H⁺ + 2 e⁻ SO₂(aq) + 2 H₂O 0.158 2 false 212 Cu Cu²⁺ + e⁻ ⇌ Cu⁺ Cu²⁺ + e⁻ Cu⁺ 0.159 1 false 213 U UO₂²⁺ + e⁻ ⇌ UO₂⁺ UO₂²⁺ + e⁻ UO₂⁺ 0.163 1 false 214 S SO₄²⁻ + 4 H⁺ + 2 e⁻ ⇌ SO₂(aq) + 2 H₂O SO₄²⁻ + 4 H⁺ + 2 e⁻ SO₂(aq) + 2 H₂O 0.17 2 false 215 Ti TiO²⁺ + 2 H⁺ + e⁻ ⇌ Ti³⁺ + H₂O TiO²⁺ + 2 H⁺ + e⁻ Ti³⁺ + H₂O 0.19 1 false 216 Sb SbO⁺ + 2 H⁺ + 3 e⁻ ⇌ Sb(s) + H₂O SbO⁺ + 2 H⁺ + 3 e⁻ Sb(s) + H₂O 0.2 3 false 217 Fe 3 Fe₂O₃(s) + 2 H⁺ + 2 e⁻ ⇌ 2 Fe₃O₄(s) + H₂O 3 Fe₂O₃(s) + 2 H⁺ + 2 e⁻ 2 Fe₃O₄(s) + H₂O 0.22 2 false 218 Ag AgCl(s) + e⁻ ⇌ Ag(s) + Cl⁻ AgCl(s) + e⁻ Ag(s) + Cl⁻ 0.22233 1 false 219 As H₃AsO₃(aq) + 3 H⁺ + 3 e⁻ ⇌ As(s) + 3 H₂O H₃AsO₃(aq) + 3 H⁺ + 3 e⁻ As(s) + 3 H₂O 0.24 3 false 220 Ru Ru³⁺ + e⁻ ⇌ Ru²⁺ Ru³⁺ + e⁻ Ru²⁺ 0.249 1 false 221 Pb PbO₂(s) + H₂O + 2 e⁻ ⇌ α-PbO(s) + 2 OH⁻ PbO₂(s) + H₂O + 2 e⁻ α-PbO(s) + 2 OH⁻ 0.254 2 false 222 Ge GeO(s) + 2 H⁺ + 2 e⁻ ⇌ Ge(s) + H₂O GeO(s) + 2 H⁺ + 2 e⁻ Ge(s) + H₂O 0.26 2 false 164 N N₂(g) + 8 H⁺ + 6 e⁻ ⇌ 2 NH₄⁺ N₂(g) + 8 H⁺ + 6 e⁻ 2 NH₄⁺ 0.27 6 false 223 Hg Hg₂Cl₂(s) + 2 e⁻ ⇌ 2 Hg(l) + 2 Cl⁻ Hg₂Cl₂(s) + 2 e⁻ 2 Hg(l) + 2 Cl⁻ 0.27 2 false 224 U UO₂⁺ + 4 H⁺ + e⁻ ⇌ U⁴⁺ + 2 H₂O UO₂⁺ + 4 H⁺ + e⁻ U⁴⁺ + 2 H₂O 0.273 1 false 225 At At + e⁻ ⇌ At⁻ At + e⁻ At⁻ 0.3 1 false 226 Bi Bi³⁺ + 3 e⁻ ⇌ Bi(s) Bi³⁺ + 3 e⁻ Bi(s) 0.308 3 false 227 C 2 HCNO + 2 H⁺ + 2 e⁻ ⇌ (CN)₂ + 2 H₂O 2 HCNO + 2 H⁺ + 2 e⁻ (CN)₂ + 2 H₂O 0.33 2 false 228 Cu Cu²⁺ + 2 e⁻ ⇌ Cu(s) Cu²⁺ + 2 e⁻ Cu(s) 0.337 2 false 229 V VO²⁺ + 2 H⁺ + e⁻ ⇌ V³⁺ + H₂O VO²⁺ + 2 H⁺ + e⁻ V³⁺ + H₂O 0.337 1 false 230 Sb Sb₂O₄(s) + 2 H⁺ + 2 e⁻ ⇌ Sb₂O₃(s) + H₂O Sb₂O₄(s) + 2 H⁺ + 2 e⁻ Sb₂O₃(s) + H₂O 0.342 2 false 231 At At⁺ + 2 e⁻ ⇌ At⁻ At⁺ + 2 e⁻ At⁻ 0.36 2 false 232 Fe [Fe(CN)₆]³⁻ + e⁻ ⇌ [Fe(CN)₆]⁴⁻ [Fe(CN)₆]³⁻ + e⁻ [Fe(CN)₆]⁴⁻ 0.3704 1 false 233 C (CN)₂ + 2 H⁺ + 2 e⁻ ⇌ 2 HCN (CN)₂ + 2 H⁺ + 2 e⁻ 2 HCN 0.373 2 false 234 P (H₂PO₃)₂(aq) + 2 H⁺ + 2 e⁻ ⇌ 2 H₃PO₃ (H₂PO₃)₂(aq) + 2 H⁺ + 2 e⁻ 2 H₃PO₃ 0.38 2 false 235 S 2 SO₂(aq) + 2 H⁺ + 2 e⁻ ⇌ S₂O₃²⁻ + H₂O 2 SO₂(aq) + 2 H⁺ + 2 e⁻ S₂O₃²⁻ + H₂O 0.4 2 false 236 O O₂(g) + 2 H₂O + 4 e⁻ ⇌ 4 OH⁻ O₂(g) + 2 H₂O + 4 e⁻ 4 OH⁻ 0.401 4 false 237 Mo H₂MoO₄ + 6 H⁺ + 3 e⁻ ⇌ Mo³⁺ + 4 H₂O H₂MoO₄ + 6 H⁺ + 3 e⁻ Mo³⁺ + 4 H₂O 0.43 3 false 238 Ru Ru²⁺ + 2 e⁻ ⇌ Ru(s) Ru²⁺ + 2 e⁻ Ru(s) 0.455 2 false 239 V VO(OH)⁺ + 2 H⁺ + e⁻ ⇌ VOH²⁺ + H₂O VO(OH)⁺ + 2 H⁺ + e⁻ VOH²⁺ + H₂O 0.481 1 false 240 Re Re³⁺ + 3 e⁻ ⇌ Re(s) Re³⁺ + 3 e⁻ Re(s) 0.5 3 false 241 C CH₃OH(aq) + 2 H⁺ + 2 e⁻ ⇌ CH₄(g) + H₂O CH₃OH(aq) + 2 H⁺ + 2 e⁻ CH₄(g) + H₂O 0.5 2 false 242 S SO₂(aq) + 4 H⁺ + 4 e⁻ ⇌ S(s) + 2 H₂O SO₂(aq) + 4 H⁺ + 4 e⁻ S(s) + 2 H₂O 0.5 4 false 243 S 4 SO₂(aq) + 4 H⁺ + 6 e⁻ ⇌ S₄O₆²⁻ + 2 H₂O 4 SO₂(aq) + 4 H⁺ + 6 e⁻ S₄O₆²⁻ + 2 H₂O 0.51 6 false 244 Cu Cu⁺ + e⁻ ⇌ Cu(s) Cu⁺ + e⁻ Cu(s) 0.52 1 false 245 C CO(g) + 2 H⁺ + 2 e⁻ ⇌ C(s) + H₂O CO(g) + 2 H⁺ + 2 e⁻ C(s) + H₂O 0.52 2 false 246 I I₃⁻ + 2 e⁻ ⇌ 3 I⁻ I₃⁻ + 2 e⁻ 3 I⁻ 0.53 2 false 247 Te TeO₂(s) + 4 H⁺ + 4 e⁻ ⇌ Te(s) + 2 H₂O TeO₂(s) + 4 H⁺ + 4 e⁻ Te(s) + 2 H₂O 0.53 4 false 248 Cu Cu²⁺ + Cl⁻ + e⁻ ⇌ CuCl(s) Cu²⁺ + Cl⁻ + e⁻ CuCl(s) 0.54 1 false 249 I I₂(s) + 2 e⁻ ⇌ 2 I⁻ I₂(s) + 2 e⁻ 2 I⁻ 0.54 2 false 250 Au AuI₄⁻ + 3 e⁻ ⇌ Au(s) + 4 I⁻ AuI₄⁻ + 3 e⁻ Au(s) + 4 I⁻ 0.56 3 false 251 As H₃AsO₄(aq) + 2 H⁺ + 2 e⁻ ⇌ H₃AsO₃(aq) + H₂O H₃AsO₄(aq) + 2 H⁺ + 2 e⁻ H₃AsO₃(aq) + H₂O 0.56 2 false 252 S S₂O₆²⁻ + 4 H⁺ + 2 e⁻ ⇌ 2 H₂SO₃ S₂O₆²⁻ + 4 H⁺ + 2 e⁻ 2 H₂SO₃ 0.569 2 false 253 Au AuI₂⁻ + e⁻ ⇌ Au(s) + 2 I⁻ AuI₂⁻ + e⁻ Au(s) + 2 I⁻ 0.58 1 false 254 Mn MnO₄⁻ + 2 H₂O + 3 e⁻ ⇌ MnO₂(s) + 4 OH⁻ MnO₄⁻ + 2 H₂O + 3 e⁻ MnO₂(s) + 4 OH⁻ 0.595 3 false 255 S S₂O₃²⁻ + 6 H⁺ + 4 e⁻ ⇌ 2 S(s) + 3 H₂O S₂O₃²⁻ + 6 H⁺ + 4 e⁻ 2 S(s) + 3 H₂O 0.6 4 false 256 Fe Fc⁺ + e⁻ ⇌ Fc(s) Fc⁺ + e⁻ Fc(s) 0.63 1 false 257 Mo H₂MoO₄(aq) + 2 H⁺ + 2 e⁻ ⇌ MoO₂(s) + 2 H₂O H₂MoO₄(aq) + 2 H⁺ + 2 e⁻ MoO₂(s) + 2 H₂O 0.65 2 false 258 N HN₃(aq) + 11 H⁺ + 8 e⁻ ⇌ 3 NH₄⁺ HN₃(aq) + 11 H⁺ + 8 e⁻ 3 NH₄⁺ 0.69 8 false 259 O O₂(g) + 2 H⁺ + 2 e⁻ ⇌ H₂O₂(aq) O₂(g) + 2 H⁺ + 2 e⁻ H₂O₂(aq) 0.695 2 false 260 Sb Sb₂O₅(s) + 4 H⁺ + 4 e⁻ ⇌ Sb₂O₃(s) + 2 H₂O Sb₂O₅(s) + 4 H⁺ + 4 e⁻ Sb₂O₃(s) + 2 H₂O 0.699 4 false 261 V H₂V₁₀O₂₈⁴⁻ + 24 H⁺ + 10 e⁻ ⇌ 10 VO(OH)⁺ + 8 H₂O H₂V₁₀O₂₈⁴⁻ + 24 H⁺ + 10 e⁻ 10 VO(OH)⁺ + 8 H₂O 0.723 10 false 262 Pt PtCl₆²⁻ + 2 e⁻ ⇌ PtCl₄²⁻ + 2 Cl⁻ PtCl₆²⁻ + 2 e⁻ PtCl₄²⁻ + 2 Cl⁻ 0.726 2 false 263 Fe Fe₂O₃(s) + 6 H⁺ + 2 e⁻ ⇌ 2 Fe²⁺ + 3 H₂O Fe₂O₃(s) + 6 H⁺ + 2 e⁻ 2 Fe²⁺ + 3 H₂O 0.728 2 false 264 Se H₂SeO₃(aq) + 4 H⁺ + 4 e⁻ ⇌ Se(s) + 3 H₂O H₂SeO₃(aq) + 4 H⁺ + 4 e⁻ Se(s) + 3 H₂O 0.74 4 false 265 At AtO⁺ + 2 H⁺ + 2 e⁻ ⇌ At⁺ + H₂O AtO⁺ + 2 H⁺ + 2 e⁻ At⁺ + H₂O 0.74 2 false 266 Tl Tl³⁺ + 3 e⁻ ⇌ Tl(s) Tl³⁺ + 3 e⁻ Tl(s) 0.741 3 false 267 No No³⁺ + e⁻ ⇌ No²⁺ No³⁺ + e⁻ No²⁺ 0.75 1 false 268 Pt PtCl₄²⁻ + 2 e⁻ ⇌ Pt(s) + 4 Cl⁻ PtCl₄²⁻ + 2 e⁻ Pt(s) + 4 Cl⁻ 0.758 2 false 269 Br BrO⁻ + H₂O + 2 e⁻ ⇌ Br⁻ + 2 OH⁻ BrO⁻ + H₂O + 2 e⁻ Br⁻ + 2 OH⁻ 0.76 2 false 270 Po Po⁴⁺ + 4 e⁻ ⇌ Po(s) Po⁴⁺ + 4 e⁻ Po(s) 0.76 4 false 271 S (SCN)₂ + 2 e⁻ ⇌ 2 SCN⁻ (SCN)₂ + 2 e⁻ 2 SCN⁻ 0.769 2 false 272 Fe Fe³⁺ + e⁻ ⇌ Fe²⁺ Fe³⁺ + e⁻ Fe²⁺ 0.771 1 false 273 Hg Hg₂²⁺ + 2 e⁻ ⇌ 2 Hg(l) Hg₂²⁺ + 2 e⁻ 2 Hg(l) 0.7973 2 false 274 Ag Ag⁺ + e⁻ ⇌ Ag(s) Ag⁺ + e⁻ Ag(s) 0.7996 1 false 275 N 2 NO₃⁻ + 4 H⁺ + 2 e⁻ ⇌ N₂O₄(g) + 2 H₂O 2 NO₃⁻ + 4 H⁺ + 2 e⁻ N₂O₄(g) + 2 H₂O 0.803 2 false 276 Fe 2 FeO₄²⁻ + 5 H₂O + 6 e⁻ ⇌ Fe₂O₃(s) + 10 OH⁻ 2 FeO₄²⁻ + 5 H₂O + 6 e⁻ Fe₂O₃(s) + 10 OH⁻ 0.81 6 false 277 Au AuBr₄⁻ + 3 e⁻ ⇌ Au(s) + 4 Br⁻ AuBr₄⁻ + 3 e⁻ Au(s) + 4 Br⁻ 0.85 3 false 278 Hg Hg²⁺ + 2 e⁻ ⇌ Hg(l) Hg²⁺ + 2 e⁻ Hg(l) 0.85 2 false 279 Ir IrCl₆²⁻ + e⁻ ⇌ IrCl₆³⁻ IrCl₆²⁻ + e⁻ IrCl₆³⁻ 0.87 1 false 280 Mn MnO₄⁻ + H⁺ + e⁻ ⇌ HMnO₄⁻ MnO₄⁻ + H⁺ + e⁻ HMnO₄⁻ 0.9 1 false 281 Po Po⁴⁺ + 2 e⁻ ⇌ Po²⁺ Po⁴⁺ + 2 e⁻ Po²⁺ 0.9 2 false 282 Hg 2 Hg²⁺ + 2 e⁻ ⇌ Hg₂²⁺ 2 Hg²⁺ + 2 e⁻ Hg₂²⁺ 0.91 2 false 283 Pd Pd²⁺ + 2 e⁻ ⇌ Pd(s) Pd²⁺ + 2 e⁻ Pd(s) 0.915 2 false 284 Au AuCl₄⁻ + 3 e⁻ ⇌ Au(s) + 4 Cl⁻ AuCl₄⁻ + 3 e⁻ Au(s) + 4 Cl⁻ 0.93 3 false 285 N NO₃⁻ + 3 H⁺ + 2 e⁻ ⇌ HNO₂(aq) NO₃⁻ + 3 H⁺ + 2 e⁻ HNO₂(aq) 0.94 2 false 286 Mn MnO₂(s) + 4 H⁺ + e⁻ ⇌ Mn³⁺ + 2 H₂O MnO₂(s) + 4 H⁺ + e⁻ Mn³⁺ + 2 H₂O 0.95 1 false 287 N NO₃⁻ + 4 H⁺ + 3 e⁻ ⇌ NO(g) + 2 H₂O NO₃⁻ + 4 H⁺ + 3 e⁻ NO(g) + 2 H₂O 0.958 3 false 288 Au AuBr₂⁻ + e⁻ ⇌ Au(s) + 2 Br⁻ AuBr₂⁻ + e⁻ Au(s) + 2 Br⁻ 0.96 1 false 289 Fe Fe₃O₄(s) + 8 H⁺ + 2 e⁻ ⇌ 3 Fe²⁺ + 4 H₂O Fe₃O₄(s) + 8 H⁺ + 2 e⁻ 3 Fe²⁺ + 4 H₂O 0.98 2 false 290 Xe HXeO₆³⁻ + 2 H₂O + 2 e⁻ ⇌ HXeO₄⁻ + 4 OH⁻ HXeO₆³⁻ + 2 H₂O + 2 e⁻ HXeO₄⁻ + 4 OH⁻ 0.99 2 false 291 N HNO₂(aq) + H⁺ + e⁻ ⇌ NO(g) + H₂O HNO₂(aq) + H⁺ + e⁻ NO(g) + H₂O 0.996 1 false 292 At HAtO + H⁺ + e⁻ ⇌ At + H₂O HAtO + H⁺ + e⁻ At + H₂O 1 1 false 293 V VO₂⁺ + 2 H⁺ + e⁻ ⇌ VO²⁺ + H₂O VO₂⁺ + 2 H⁺ + e⁻ VO²⁺ + H₂O 1 1 false 294 Te H₆TeO₆(aq) + 2 H⁺ + 2 e⁻ ⇌ TeO₂(s) + 4 H₂O H₆TeO₆(aq) + 2 H⁺ + 2 e⁻ TeO₂(s) + 4 H₂O 1.02 2 false 295 N NO₂(g) + 2 H⁺ + 2 e⁻ ⇌ NO(g) + H₂O NO₂(g) + 2 H⁺ + 2 e⁻ NO(g) + H₂O 1.03 2 false 296 Br Br₃⁻ + 2 e⁻ ⇌ 3 Br⁻ Br₃⁻ + 2 e⁻ 3 Br⁻ 1.05 2 false 297 Sb Sb₂O₅(s) + 2 H⁺ + 2 e⁻ ⇌ Sb₂O₄(s) + H₂O Sb₂O₅(s) + 2 H⁺ + 2 e⁻ Sb₂O₄(s) + H₂O 1.055 2 false 298 I ICl₂⁻ + e⁻ ⇌ 2 Cl⁻ + I(s) ICl₂⁻ + e⁻ 2 Cl⁻ + I(s) 1.06 1 false 299 Br Br₂(l) + 2 e⁻ ⇌ 2 Br⁻ Br₂(l) + 2 e⁻ 2 Br⁻ 1.066 2 false 300 N N₂O₄(g) + 2 H⁺ + 2 e⁻ ⇌ 2 HNO₂ N₂O₄(g) + 2 H⁺ + 2 e⁻ 2 HNO₂ 1.07 2 false 301 Br Br₂(aq) + 2 e⁻ ⇌ 2 Br⁻ Br₂(aq) + 2 e⁻ 2 Br⁻ 1.0873 2 false 302 Ru RuO₂ + 4 H⁺ + 2 e⁻ ⇌ Ru²⁺ + 2 H₂O RuO₂ + 4 H⁺ + 2 e⁻ Ru²⁺ + 2 H₂O 1.12 2 false 303 Cu Cu²⁺ + 2 CN⁻ + e⁻ ⇌ Cu(CN)₂⁻ Cu²⁺ + 2 CN⁻ + e⁻ Cu(CN)₂⁻ 1.12 1 false 304 I IO₃⁻ + 5 H⁺ + 4 e⁻ ⇌ HIO(aq) + 2 H₂O IO₃⁻ + 5 H⁺ + 4 e⁻ HIO(aq) + 2 H₂O 1.13 4 false 305 O H₂O₂(aq) + H⁺ + e⁻ ⇌ H₂O + HO• H₂O₂(aq) + H⁺ + e⁻ H₂O + HO• 1.14 1 false 306 Au AuCl₂⁻ + e⁻ ⇌ Au(s) + 2 Cl⁻ AuCl₂⁻ + e⁻ Au(s) + 2 Cl⁻ 1.15 1 false 307 Se HSeO₄⁻ + 3 H⁺ + 2 e⁻ ⇌ H₂SeO₃(aq) + H₂O HSeO₄⁻ + 3 H⁺ + 2 e⁻ H₂SeO₃(aq) + H₂O 1.15 2 false 308 Ag Ag₂O(s) + 2 H⁺ + 2 e⁻ ⇌ 2 Ag(s) + H₂O Ag₂O(s) + 2 H⁺ + 2 e⁻ 2 Ag(s) + H₂O 1.17 2 false 309 Cl ClO₃⁻ + 2 H⁺ + e⁻ ⇌ ClO₂(g) + H₂O ClO₃⁻ + 2 H⁺ + e⁻ ClO₂(g) + H₂O 1.175 1 false 310 Xe HXeO₆³⁻ + 5 H₂O + 8 e⁻ ⇌ Xe(g) + 11 OH⁻ HXeO₆³⁻ + 5 H₂O + 8 e⁻ Xe(g) + 11 OH⁻ 1.18 8 false 311 Pt Pt²⁺ + 2 e⁻ ⇌ Pt(s) Pt²⁺ + 2 e⁻ Pt(s) 1.188 2 false 312 Cl ClO₂(g) + H⁺ + e⁻ ⇌ HClO₂(aq) ClO₂(g) + H⁺ + e⁻ HClO₂(aq) 1.19 1 false 313 I 2 IO₃⁻ + 12 H⁺ + 10 e⁻ ⇌ I₂(s) + 6 H₂O 2 IO₃⁻ + 12 H⁺ + 10 e⁻ I₂(s) + 6 H₂O 1.2 10 false 314 Mn MnO₂(s) + 4 H⁺ + 2 e⁻ ⇌ Mn²⁺ + 2 H₂O MnO₂(s) + 4 H⁺ + 2 e⁻ Mn²⁺ + 2 H₂O 1.224 2 false 315 O O₂(g) + 4 H⁺ + 4 e⁻ ⇌ 2 H₂O O₂(g) + 4 H⁺ + 4 e⁻ 2 H₂O 1.229 4 false 317 Cl ClO₄⁻ + 2 H⁺ + 2 e⁻ ⇌ ClO₃⁻ + H₂O ClO₄⁻ + 2 H⁺ + 2 e⁻ ClO₃⁻ + H₂O 1.23 2 false 318 Ru [Ru(bipy)₃]³⁺ + e⁻ ⇌ [Ru(bipy)₃]²⁺ [Ru(bipy)₃]³⁺ + e⁻ [Ru(bipy)₃]²⁺ 1.24 1 false 319 Xe HXeO₄⁻ + 3 H₂O + 6 e⁻ ⇌ Xe(g) + 7 OH⁻ HXeO₄⁻ + 3 H₂O + 6 e⁻ Xe(g) + 7 OH⁻ 1.24 6 false 320 N 2 NO₃⁻ + 12 H⁺ + 10 e⁻ ⇌ N₂(g) + 6 H₂O 2 NO₃⁻ + 12 H⁺ + 10 e⁻ N₂(g) + 6 H₂O 1.25 10 false 321 Tl Tl³⁺ + 2 e⁻ ⇌ Tl⁺ Tl³⁺ + 2 e⁻ Tl⁺ 1.25 2 false 316 N N₂H₅⁺ + 3 H⁺ + 2 e⁻ ⇌ 2 NH₄⁺ N₂H₅⁺ + 3 H⁺ + 2 e⁻ 2 NH₄⁺ 1.28 2 false 322 N 2 HNO₂(aq) + 4 H⁺ + 4 e⁻ ⇌ N₂O(g) + 3 H₂O 2 HNO₂(aq) + 4 H⁺ + 4 e⁻ N₂O(g) + 3 H₂O 1.297 4 false 323 Cr Cr₂O₇²⁻ + 14 H⁺ + 6 e⁻ ⇌ 2 Cr³⁺ + 7 H₂O Cr₂O₇²⁻ + 14 H⁺ + 6 e⁻ 2 Cr³⁺ + 7 H₂O 1.33 6 false 324 N NH₃OH⁺ + 2 H⁺ + 2 e⁻ ⇌ NH₄⁺ + H₂O NH₃OH⁺ + 2 H⁺ + 2 e⁻ NH₄⁺ + H₂O 1.35 2 false 325 Cl Cl₂(g) + 2 e⁻ ⇌ 2 Cl⁻ Cl₂(g) + 2 e⁻ 2 Cl⁻ 1.36 2 false 326 Ru RuO₄⁻ + 8 H⁺ + 5 e⁻ ⇌ Ru²⁺ + 4 H₂O RuO₄⁻ + 8 H⁺ + 5 e⁻ Ru²⁺ + 4 H₂O 1.368 5 false 327 Ru RuO₄ + 4 H⁺ + 4 e⁻ ⇌ RuO₂ + 2 H₂O RuO₄ + 4 H⁺ + 4 e⁻ RuO₂ + 2 H₂O 1.387 4 false 328 Co CoO₂(s) + 4 H⁺ + e⁻ ⇌ Co³⁺ + 2 H₂O CoO₂(s) + 4 H⁺ + e⁻ Co³⁺ + 2 H₂O 1.42 1 false 329 N 2 NH₃OH⁺ + H⁺ + 2 e⁻ ⇌ N₂H₅⁺ + 2 H₂O 2 NH₃OH⁺ + H⁺ + 2 e⁻ N₂H₅⁺ + 2 H₂O 1.42 2 false 330 I 2 HIO(aq) + 2 H⁺ + 2 e⁻ ⇌ I₂(s) + 2 H₂O 2 HIO(aq) + 2 H⁺ + 2 e⁻ I₂(s) + 2 H₂O 1.44 2 false 331 Br BrO₃⁻ + 5 H⁺ + 4 e⁻ ⇌ HBrO(aq) + 2 H₂O BrO₃⁻ + 5 H⁺ + 4 e⁻ HBrO(aq) + 2 H₂O 1.447 4 false 332 Pb β⁻PbO₂(s) + 4 H⁺ + 2 e⁻ ⇌ Pb²⁺ + 2 H₂O β⁻PbO₂(s) + 4 H⁺ + 2 e⁻ Pb²⁺ + 2 H₂O 1.46 2 false 333 Pb α⁻PbO₂(s) + 4 H⁺ + 2 e⁻ ⇌ Pb²⁺ + 2 H₂O α⁻PbO₂(s) + 4 H⁺ + 2 e⁻ Pb²⁺ + 2 H₂O 1.468 2 false 334 Br 2 BrO₃⁻ + 12 H⁺ + 10 e⁻ ⇌ Br₂(l) + 6 H₂O 2 BrO₃⁻ + 12 H⁺ + 10 e⁻ Br₂(l) + 6 H₂O 1.48 10 false 335 At HAtO₃ + 4 H⁺ + 4 e⁻ ⇌ HAtO + 2 H₂O HAtO₃ + 4 H⁺ + 4 e⁻ HAtO + 2 H₂O 1.5 4 false 336 Mn MnO₄⁻ + 8 H⁺ + 5 e⁻ ⇌ Mn²⁺ + 4 H₂O MnO₄⁻ + 8 H⁺ + 5 e⁻ Mn²⁺ + 4 H₂O 1.51 5 false 337 O HO₂• + H⁺ + e⁻ ⇌ H₂O₂(aq) HO₂• + H⁺ + e⁻ H₂O₂(aq) 1.51 1 false 338 Au Au³⁺ + 3 e⁻ ⇌ Au(s) Au³⁺ + 3 e⁻ Au(s) 1.52 3 false 339 Ru RuO₄²⁻ + 8 H⁺ + 4 e⁻ ⇌ Ru²⁺ + 4 H₂O RuO₄²⁻ + 8 H⁺ + 4 e⁻ Ru²⁺ + 4 H₂O 1.563 4 false 340 N 2 NO(g) + 2 H⁺ + 2 e⁻ ⇌ N₂O(g) + H₂O 2 NO(g) + 2 H⁺ + 2 e⁻ N₂O(g) + H₂O 1.59 2 false 341 Ni NiO₂(s) + 2 H⁺ + 2 e⁻ ⇌ Ni²⁺ + 2 OH⁻ NiO₂(s) + 2 H⁺ + 2 e⁻ Ni²⁺ + 2 OH⁻ 1.59 2 false 342 Ce Ce⁴⁺ + e⁻ ⇌ Ce³⁺ Ce⁴⁺ + e⁻ Ce³⁺ 1.61 1 false 343 Cl 2 HClO(aq) + 2 H⁺ + 2 e⁻ ⇌ Cl₂(g) + 2 H₂O 2 HClO(aq) + 2 H⁺ + 2 e⁻ Cl₂(g) + 2 H₂O 1.63 2 false 344 I IO₄⁻ + 2 H⁺ + 2 e⁻ ⇌ IO₃⁻ + H₂O IO₄⁻ + 2 H⁺ + 2 e⁻ IO₃⁻ + H₂O 1.64 2 false 345 Ag Ag₂O₃(s) + 6 H⁺ + 4 e⁻ ⇌ 2 Ag⁺ + 3 H₂O Ag₂O₃(s) + 6 H⁺ + 4 e⁻ 2 Ag⁺ + 3 H₂O 1.67 4 false 346 Cl HClO₂(aq) + 2 H⁺ + 2 e⁻ ⇌ HClO(aq) + H₂O HClO₂(aq) + 2 H⁺ + 2 e⁻ HClO(aq) + H₂O 1.67 2 false 347 Pb Pb⁴⁺ + 2 e⁻ ⇌ Pb²⁺ Pb⁴⁺ + 2 e⁻ Pb²⁺ 1.69 2 false 348 Mn MnO₄⁻ + 4 H⁺ + 3 e⁻ ⇌ MnO₂(s) + 2 H₂O MnO₄⁻ + 4 H⁺ + 3 e⁻ MnO₂(s) + 2 H₂O 1.7 3 false 349 Br BrO₄⁻ + 2 H⁺ + 2 e⁻ ⇌ BrO₃⁻ + H₂O BrO₄⁻ + 2 H⁺ + 2 e⁻ BrO₃⁻ + H₂O 1.74 2 false 350 Ag AgO(s) + 2 H⁺ + e⁻ ⇌ Ag⁺ + H₂O AgO(s) + 2 H⁺ + e⁻ Ag⁺ + H₂O 1.77 1 false 351 N N₂O(g) + 2 H⁺ + 2 e⁻ ⇌ N₂(g) + H₂O N₂O(g) + 2 H⁺ + 2 e⁻ N₂(g) + H₂O 1.77 2 false 352 O H₂O₂(aq) + 2 H⁺ + 2 e⁻ ⇌ 2 H₂O H₂O₂(aq) + 2 H⁺ + 2 e⁻ 2 H₂O 1.78 2 false 353 Au Au⁺ + e⁻ ⇌ Au(s) Au⁺ + e⁻ Au(s) 1.83 1 false 354 Co Co³⁺ + e⁻ ⇌ Co²⁺ Co³⁺ + e⁻ Co²⁺ 1.92 1 false 355 Ag Ag²⁺ + e⁻ ⇌ Ag⁺ Ag²⁺ + e⁻ Ag⁺ 1.98 1 false 356 O S₂O₈²⁻ + 2 e⁻ ⇌ 2 SO₄²⁻ S₂O₈²⁻ + 2 e⁻ 2 SO₄²⁻ 2.01 2 false 357 O O₃(g) + 2 H⁺ + 2 e⁻ ⇌ O₂(g) + H₂O O₃(g) + 2 H⁺ + 2 e⁻ O₂(g) + H₂O 2.075 2 false 358 Mn HMnO₄⁻ + 3 H⁺ + 2 e⁻ ⇌ MnO₂(s) + 2 H₂O HMnO₄⁻ + 3 H⁺ + 2 e⁻ MnO₂(s) + 2 H₂O 2.09 2 false 359 Xe XeO₃(aq) + 6 H⁺ + 6 e⁻ ⇌ Xe(g) + 3 H₂O XeO₃(aq) + 6 H⁺ + 6 e⁻ Xe(g) + 3 H₂O 2.12 6 false 360 Xe H₄XeO₆(aq) + 8 H⁺ + 8 e⁻ ⇌ Xe(g) + 6 H₂O H₄XeO₆(aq) + 8 H⁺ + 8 e⁻ Xe(g) + 6 H₂O 2.18 8 false 361 Fe FeO₄²⁻ + 8 H⁺ + 3 e⁻ ⇌ Fe³⁺ + 4 H₂O FeO₄²⁻ + 8 H⁺ + 3 e⁻ Fe³⁺ + 4 H₂O 2.2 3 false 362 Xe XeF₂(aq) + 2 H⁺ + 2 e⁻ ⇌ Xe(g) + 2 HF(aq) XeF₂(aq) + 2 H⁺ + 2 e⁻ Xe(g) + 2 HF(aq) 2.32 2 false 363 O HO• + H⁺ + e⁻ ⇌ H₂O HO• + H⁺ + e⁻ H₂O 2.38 1 false 364 Xe H₄XeO₆(aq) + 2 H⁺ + 2 e⁻ ⇌ XeO₃(aq) + 3 H₂O H₄XeO₆(aq) + 2 H⁺ + 2 e⁻ XeO₃(aq) + 3 H₂O 2.42 2 false 365 F F₂(g) + 2 e⁻ ⇌ 2 F⁻ F₂(g) + 2 e⁻ 2 F⁻ 2.87 2 false 366 Cm Cm⁴⁺ + e⁻ ⇌ Cm³⁺ Cm⁴⁺ + e⁻ Cm³⁺ 3 1 true 367 F F₂(g) + 2 H⁺ + 2 e⁻ ⇌ 2 HF(aq) F₂(g) + 2 H⁺ + 2 e⁻ 2 HF(aq) 3.077 2 false 368 Tb Tb⁴⁺ + e⁻ ⇌ Tb³⁺ Tb⁴⁺ + e⁻ Tb³⁺ 3.1 1 true 369 Pr Pr⁴⁺ + e⁻ ⇌ Pr³⁺ Pr⁴⁺ + e⁻ Pr³⁺ 3.2 1 true 370 Kr KrF₂(aq) + 2 e⁻ ⇌ Kr(g) + 2 F⁻ KrF₂(aq) + 2 e⁻ Kr(g) + 2 F⁻ 3.27 2 true