Noble metal Electrochemistry Electrochemistry

| element_ | group_ | period | reaction | potential |
|---|---|---|---|---|
| Gold | 11 | 6 | Au 3+ + 3e − → Au | 1.56 V |
| Platinum | 10 | 6 | Pt 2+ + 2e − → Pt | 1.18 V |
| Iridium | 9 | 6 | Ir 3+ + 3e − → Ir | 1.156 V |
| Palladium | 10 | 5 | Pd 2+ + 2e − → Pd | 0.987 V |
| Osmium | 8 | 6 | OsO 4 + 8 H + + 8e − → Os + 4 H 2 O | 0.838 V |
| Silver | 11 | 5 | Ag + + e − → Ag | 0.7996 V |
| Mercury | 12 | 6 | Hg 2+ 2 + 2e − → 2 Hg | 0.7973 V |