MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic ChemistryCoordination compoundsPrevious Year Questions

Among the following, the species having square planar geometry for central atom are [AIIMS2006] (i) XeF4 (ii) SF4 (iii) [NiCl4] 2– (iv) [PtCl4] 2–

A.(i) and (iv)✓ Correct

B.(i) and (ii)

C.(ii) and (iii)

D.(iii) and (iv)

Explanation

XeF4 & [PtCl4]–2 has a square planar geometry because- 1. XeF4 is square planar due to the presence of 2 lone pairs. 2. Pt has bigger d orbitals than Ni, which can hold more 25 COORDINATION COMPOUNDS electron density because electron density can be spread out in a large d orbital. Therefore, platinum can support a higher energy structure such as square planar structure. Hence, the correct option is (a).

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