Question

ln cuprarnmonium sulphate, copper is

• A. diamagnetic
• B. paramagnetic
• C. ferromagnetic
• D. non magnetic

Answer 1

Answer: (B)

$[Cu(N{H}_3{)}_4]S{O}_4$ is tetra ammine copper (II) sulphate.
$C{u}^{2+}$ has 1 unpaired electron. Hence, it is paramagnetic.