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Wednesday, January 6, 2021

Which of the following compound have longest (S=O)bond length , O=SF2, O=SCl2, O=SBr2.

The central atoms of all the given conpund (O=SF2, O=SCl2, O=SBr2) are same and also have same hybidization (Sp3) hence we can applied  Bent’s rule of Hybidization . According to bent rule more electronegative elements increases % P-character  and decreases % S-character  of  that orbital in its  attach. While  in other orbital % S-character increase that why bond length decrease. Hence S=O bond length depends upon electronegativitiy of other attach atoms (F>Cl>I).

The overall S=O bond length order is   O=SBr2 > O=SCl2 > O=SF2O

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