Which of the following

CHEMISTRY · Single correct · CBSE · Chemistry · Coordination Compounds · Coordination Compounds

Problem

Which of the following, on treatment with

\text{KCN}

, will give cyanogen gas? (1)

[\text{Ag}(\text{NH}_3)_2]^+

(2)

[\text{Cu}(\text{NH}_3)_4]^{2+}

(3)

[\text{Cd}(\text{NH}_3)_4]^{2+}

(4)

[\text{Zn}(\text{NH}_3)_4]^{2+}