Paper: CSIR-NET December 2013 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Chemical Bonding – General · Marks: 2 · Difficulty: Easy
Under review — part of this question (a structure or an option) is not clear in the source scan. 4AB is checking it against the original book; the answer shown may change.
Among the following, an example of a hypervalent species is
(a)$\mathrm{BF_3\cdot OEt_2}$
(b)$\mathrm{SF}_{4}$
(c)$\left[\mathrm{PF}_{6}\right]^{-}$
(d)$\mathrm{Sb_2S_3}$
Answer
Under review — not yet confirmed.
Answer: C
Explanation
P in [PF₆]⁻ has twelve electrons in its valence shell — a hypervalent species (c).