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Dinesh khalmaniya 1
it is simple logic that BA increase,%S increase. S Character is a contribution of s orbital in hybridization. S Character is directly proportional to bond angle, i.e. S Character ∝ bond angle. The more s character of hybrid orbital a molecule have, the greater is the angle between their bond. For more details check below link https://chemistry.stackexchange.com/questions/122557/mathematical-relation-between-bond-angle-and-fraction-of-s-or-p-character