Question

The elements of 3d transition series are given as:

Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn

Answer the following:

Zn²⁺ salts are colourless. Why?

Answer 1

The configuration of zinc in its +2 state is [Ar]3d¹⁰4s⁰, meaning that every electron is coupled in d orbitals. As a result, its salts are colorless, and the d-d transition is prevented.