The solution of M also gives a white precipitate which dissolves in excess ammonia Therefore the cation in M is?

An aqueous solution of a metal salt, M. gives a white precipitate with NaOH which dissolves in excess NaOH. With aqueous ammonia, the solution of M also gives a white precipitate which dissolves in excess ammonia Therefore the cation in M is

A. Zn
B. Ca
C. Al
D. Po

Correct Answer:

Option A = Zn