Paper: CSIR-NET December 2015 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Chemical Bonding – General · Marks: 2 · Difficulty: Easy
The number of lone pair(s) of electrons on the central atom in $\left[\mathrm{BrF}_{4}\right]^{-}, \mathrm{XeF}_{6}$ and $\left[\mathrm{SbCl}_{6}\right]^{-}$are respectively
(a)2, 0 and 1
(b)1, 0 and 0
(c)2, 1 and 1
(d)2, 1 and 0
Answer
Answer: D ✓ checked by 4AB · confidence high
The source book printed C; on checking, D is correct — see the explanation.
Explanation
BrF₄⁻ has 2 lone pairs on Br (square planar). XeF₆ has 1 on Xe (distorted octahedron). SbCl₆⁻ has 0 (d).