Question

ln cuprarnmonium sulphate, copper is

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

Answer 1

Answer: (B)

paramagnetic

Answer 2

${[Cu(NH_3)_4]SO_4}$ is tetra ammine copper (II) sulphate.
$Cu^{2+}$ has 1 unpaired electron. Hence, it is paramagnetic.