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Question: Answered & Verified by Expert
The number of electrons is the valence shell of the central atom of a molecules is 8 . The molecule is
ChemistryClassification of Elements and Periodicity in PropertiesTS EAMCETTS EAMCET 2014
Options:
  • A $\mathrm{BCl}_3$
  • B $\mathrm{BeH}_2$
  • C $\mathrm{SCl}_2$
  • D $\mathrm{SF}_6$
Solution:
2483 Upvotes Verified Answer
The correct answer is: $\mathrm{SCl}_2$
In $\mathrm{SCl}_2$, number of lone pairs on $\mathrm{S}=\frac{6-2(1)}{2}=2$
$\therefore$ Total number of pairs of electrons
$=2$ bonding +2 lone pairs $=4$ pairs
$\therefore$ Total number of electrons in valency shell $=4 \times 2=8$

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