Q30 · CSIR NET Chemistry, June 2013
Paper: CSIR NET June 2013 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Chemical Bonding – General · Marks: 2 · Difficulty: Easy
Among the following, an example of a hypervalent species is
(a)$\mathrm{BF}_{3} . \mathrm{OEt}_{2}$
(b)$\mathrm{SF}_{4}$
(c)$\left[\mathrm{PF}_{6}\right]^{-}$
(d)$\mathrm{Sb_2S_3}$
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
[PF₆]⁻ has 12 valence electrons at P — hypervalent (c).
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