Which from following molecules does not have lone pair of electrons in valence shell of central atom?

Which from following molecules does not have lone pair of electrons in valence shell of central atom?
  1. $\mathrm{NH}_3$
  2. $\mathrm{H}_2 \mathrm{O}$
  3. $\mathrm{SO}_2$
  4. $\mathrm{BF}_3$

Solution


As $\mathrm{BF}_3$ is an electron deficient molecule, so there cannot be lone pair on the central atom boron.

Asked in: MHT CET 2024 (04 May Shift 1)

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