Question

The element which forms ions in the dimeric state is :

• A. copper
• B. nickel
• C. silver
• D. mercury

Answer 1

Answer: (D)

mercury

Answer 2

Mercury forms mercurous ion $(Hg_{2}^{2+})$ in the dimeric form e.g., mercurous chloride is $H{{g}_{2}}C{{l}_{2}},$ which is also called calomal.