Question

Oxidation number of Sodium in Sodium amalgam is:

• A. $+2$
• B. $+1$
• C. $-2$
• D. $0$

Answer 1

The correct option is D $0$

Sodium amalgam is an alloy of sodium with mercury. Both sodium and mercury are present in the free uncombined elemental state.

Hence, they have an oxidation number $0$.