Which pair of molecules are polar species?

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

Problem

Which pair of molecules are polar species? (1) CO2\text{CO}_2 and H2O\text{H}_2\text{O} (2) BF3\text{BF}_3 and PCl3\text{PCl}_3 (3) SO2\text{SO}_2 and SCl2\text{SCl}_2 (4) CS2\text{CS}_2 and SO3\text{SO}_3

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