Question

Identify a chemical entity (molecule and/or ion) that requires resonance hybrid:
1 )CH3F
2 )NH4+
3) CCl4
4 )SO2

Answer 1

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Answer 2

A chemical entity (molecule and/or ion) that requires resonance hybrid is SO₂

• The phenomenon of the existence of more than one structure to explain bonding in molecules is called resonance. The resonance hybrid is considered to be the most stable in such cases.
• Among the given examples, SO₂ (Sulphur dioxide) has two resonating structures that give equal contribution in the formation of resonance hybrid.