Table:
text: 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

Question: Which element of the highest period is platinum among the precious metals?