The sulfite ion,

CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding

Problem

The sulfite ion, SO32−\mathrm{SO}_{3}^{2-}, is described by three resonance structures, each containing one S=O double bond and two S–O single bonds. What is the average bond order of an S–O bond in SO32−\mathrm{SO}_{3}^{2-}? (a) 1.501.50 (b) 1.331.33 (c) 2.002.00 (d) 1.001.00

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