Question

The oxidation state of mercury in amalgam, calomel and corrosive sublimate is:

• A. 0, +1, +2
• B. +1, +1, +2
• C. +1, +2, +1
• D. 0, +1, +1

Answer 1

The correct option is A 0, +1, +2

In amalgam, mercury has 0 oxidation state
Calomel is $H{g}_{2}C{l}_2$ in which $Hg$ oxidation state is +1
Corrosive sublimate is $HgC{l}_2$ in which $Hg$ oxidation state is +2