MHT CET · Chemistry · Chemical Bonding and Molecular Structure
Identify a molecule with incomplete octet from following.
- A \(\mathrm{SF}_6\)
- B \(\mathrm{PCl}_5\)
- C \(\mathrm{LiCl}\)
- D \(\mathrm{H}_2 \mathrm{SO}_4\)
Answer & Solution
Correct Answer
(C) \(\mathrm{LiCl}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{Li}\) in \(\mathrm{LiCl}\) has less than eight electrons in its valence shell. It has only four electrons. Hence, it has an incomplete octet. Molecules like \(\mathrm{SF}_6\), \(\mathrm{PCl}_5, \mathrm{H}_2 \mathrm{SO}_4\) have an expanded octet. They have more than eight electrons around the central atom.
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