Which of the following molecules does NOT obey octet rule?

Which of the following molecules does NOT obey octet rule?
  1. $\mathrm{CCl}_4$
  2. $\mathrm{Cl}_2$
  3. $\mathrm{O}_2$
  4. $\mathrm{BeF}_2$

Solution

In $\mathrm{BeF}_2, \mathrm{Be}$ has 4 electrons in its valence shell. Thus, it does not obey octet rule.

Asked in: MHT CET 2023 (13 May Shift 1)

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