Question

Which of the following compounds is expected to be coloured?

• A. $A{g}_{2}S{O}_4$
• B. $Cu{F}_2$
• C. $Mg{F}_2$
• D. $CuCl$

Answer 1

Answer: (B)

$C{u}^{2+}(3d^9)$ undergo $d-d$ transition, exhibit colour.