Question

Among the following pairs, those in which both species have similar structures (isostructural) are:

• A. \(N_3^-,\ XeF_2\)
• B. \([ICl_4]^-,\ [NiCl_4]^{2-}\)
• C. \([ClF_2]^+,\ [ICl_4]^-\)
• D. \(XeO_3,\ SO_3\)

Hint:

Compare the VSEPR shapes (hybridisation and lone pairs) of each species in the four pairs.

Answer 1

The Correct Option is A

Tabulate hybridisation/shape: N3- sp linear; XeF2 sp3d linear; [ICl4]- sp3d2 square planar; [NiCl4]2- sp3 tetrahedral; [ClF2]+ sp3 bent; XeO3 sp3 pyramidal; SO3 sp2 trigonal planar. Only pair A matches (both linear).

\[\boxed{(A)\ N_3^-,\ XeF_2}\]