Question

Which of the following set has all coloured ions

• A. $C{u}^{+},C{u}^{2+},N{i}^{2+}$
• B. $C{u}^{2+},C{o}^{2+},S{c}^{2+}$
• C. $Cu{2}^{+},F{e}^{2+},C{o}^{2+}$
• D. $N{a}^{+},M{g}^{2+},A{l}^{3+}$

Answer 1

The correct option is C $Cu{2}^{+},F{e}^{2+},C{o}^{2+}$

They all have unpaired $\therefore$ They are coloured