Table:
text: Noble metal
Electrochemistry
Electrochemistry
element_ group_ period reaction potential
Polonium 16 6 Po 2+ + 2e − → Po 0.65 V
Rhodium 9 5 Rh 2+ + 2e − → Rh 0.600 V
Ruthenium 8 5 Ru 2+ + 2e − → Ru 0.455 V
Copper 11 4 Cu 2+ + 2e − → Cu 0.337 V
Bismuth 15 6 Bi 3+ + 3e − → Bi 0.308 V
Technetium 7 5 TcO 2 + 4 H + + 4e − → Tc + 2 H 2 O 0.272 V
Rhenium 7 6 ReO 2 + 4 H + + 4e − → Re + 2 H 2 O 0.259 V
Antimony 15 5 Sb 2 O 3 + 6 H + + 6e − → 2 Sb + 3 H 2 O 0.152 V

Question: Among the precious metals, which lowest period element is ruthenium?