How many of the following molecules or ions exhibit resonance stabilization? , , , , , , , , . — Chemical Bonding Chemistry Question
Question
How many of the following molecules or ions exhibit resonance stabilization? $O_3$, $NH_3$, $CO_3^{2-}$, $CH_4$, $SO_4^{2-}$, $PO_4^{3-}$, $NO_3^-$, $H_2O$, $BF_3$.
Answer: 6
💡 Solution & Explanation
The species that exhibit resonance are $O_3$, $CO_3^{2-}$, $SO_4^{2-}$, $PO_4^{3-}$, $NO_3^-$, and $BF_3$ (via back-bonding resonance). $NH_3$, $CH_4$, and $H_2O$ possess completely localized single bonds and do not show resonance. Total = 6.
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