In which of the following pairs

CHEMISTRY · Single correct · A Level · Chemistry · Transition metals and their chemistry · Transition metals and their chemistry

Problem

In which of the following pairs, both the complexes have the same geometry? (1)

[\text{NiCl}_4]^{2-}

[\text{Ni}(\text{CN})_4]^{2-}

(2)

[\text{CoF}_6]^{3-}

[\text{Co}(\text{NH}_3)_6]^{3+}

(3)

[\text{Ni}(\text{CO})_4]

[\text{Ni}(\text{CN})_4]^{2-}

(4)

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

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