Electrode Reaction	Standard Potential, φ˚ in volts at 25˚C
Au³⁺ + 3e⁻ = Au	1.50
Pt²⁺ + 2e⁻ = Pt	∼1.2
Pd²⁺ + 2e⁻ = Pd	0.987
Hg²⁺ + 2e⁻ = Hg	0.854
Ag⁺ + e⁻ = Pt	0.800
Cu⁺ + e⁻ = Cu	0.521
Cu²⁺ + 2e⁻ = Cu	0.342
2H⁺ + 2e⁻ = H₂	0.000
Pb²⁺ + 2e⁻ = Pb	−0.126
Sn²⁺ + 2e⁻ = Sn	−0.136
Mo²⁺+2e⁻ = Mo	∼−0.2
Ni²⁺ + 2e⁻ = Ni	−0.250
Co²⁺ + 2e⁻ = Co	−0.277
Ti⁺ + e⁻ = Ti	−0.336
In³⁺ + 3e⁻ = In	−0.342
Cd²⁺ + 2e⁻ = Cd	−0.403
Fe²⁺ + 2e⁻ = Fe	−0.440
Ga³⁺ + 3e⁻ = Ga	−0.53
Cr³⁺ + 3e⁻ = Cr	−0.74
Zn²⁺ + 2e⁻ = Zn	−0.763
Cr²⁺ + 2e⁻ = Cr	−0.91
Nb³⁺ + 3e⁻ = Nb	∼−1.1
Mn²⁺ + 2e⁻ = Mn	−1.18
Zr⁴⁺ + 4e⁻ = Zr	−1.53
Ti²⁺ + 2e⁻ = Ti	−1.63
Al³⁺ + 3e⁻ = Al	−1.66
Hf⁴⁺ + 4e⁻ = Hf	−1.70
U³⁺ + 3e⁻ = U	−1.80
Be²⁺ + 2e⁻ = Be	−1.85
Mg²⁺ + 2e⁻ = Mg	−2.37
Na⁺ + e⁻ = Na	−2.71
Ca²⁺ + 2e⁻ = Ca	−2.87
K⁺ + e⁻ = K	−2.93
Li⁺ + e⁻ = Li	−3.05