Assertion : H-S-H bond angle in `H_2S` is closer to `90^@` but: H-O-H bond angle in `H_2O` is `104.5^@`.
Reason : lp-lp repulsion is stronger in `H_2S` than in `H_2O`.

Options

A. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion
B. If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
C. If Assertion is correct , but Reason is incorrect
D. If both Assertion and Reason are incorrect

Answer

C

Explanation

Due to lower electronegativity of S as compared to O, the bond pairs of H-S bonds lie away from S in `H_2S` as compared to bond pairs of O-H bonds in `H_2O`.As a result, bp-bp repulsions in `H_2S` are weaker than in `H_2O` and hence H-S-H bond angle in `H_2S` is smaller `(90^@)` than H-O-H bond angle in `H_2O(104.5^@)`.