Out of the following, how many compounds violate the octet rule? , , , , , , , . — Chemical Bonding Chemistry Question
Question
Out of the following, how many compounds violate the octet rule? $CO_2$, $PCl_5$, $SiF_4$, $BrF_5$, $IF_7$, $PCl_3$, $H_2O$, $BF_3$.
Answer: 4
💡 Solution & Explanation
The violators are $PCl_5$ (expanded, 10 $e^-$), $BrF_5$ (expanded, 12 $e^-$), $IF_7$ (expanded, 14 $e^-$), and $BF_3$ (incomplete, 6 $e^-$). The remaining 4 follow the octet rule perfectly.
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