Question

Out of H₂O and H₂S, which one has higher bond angle and why?

Answer 1

Bond angle of H₂O is larger, because oxygen is more electronegative than sulphur therefore bond pair electron of O–H bond will be closer to oxygen and there will be more bond-pair bond-pair repulsion between bond pairs of two O–H bonds.

Comments

Not so good. Answer should be to the point

Answer 2

Bond angle is directly proportional to electronegativity of central atom.

as electronegativity of O is more than S so bond angle of H2O more than H2S.

Due to more electronegativity of oxygen electron cloud shift towards it and this lead to increase in b.p-b.p repulsion.