Identify incorrectly matched set from the following

1. Molecules with incomplete octet- $\mathrm{BeH}_2, \mathrm{BCl}_3$
2. Polar molecules- $\mathrm{BF}_3, \mathrm{CCl}_4$
3. Molecules with expanded octet- $\mathrm{PCl}_5, \mathrm{SF}_6$
4. Odd electron molecules-NO, $\mathrm{NO}_2$

Solution

$\mathrm{BF}_3$ and $\mathrm{CCl}_4$ are non-polar molecules due to symmetrical arrangement of the bond pairs that result in the cancellation of the individual bond dipoles.

Asked in: AP EAMCET 2023 (15 May Shift 1)

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