Assertion H-S-H bond angle in H2S is closer to 90° but H-0-H bond angle in H2O is 104.5°. Reason lp-lp repulsion is stronger in H2S than in H2O.

Question

Assertion H-S-H bond angle in H2S is closer to 90° but H-0-H bond angle in H2O is 104.5°. Reason lp-lp repulsion is stronger in H2S than in H2O. (A) Both Assertion and Reason are true and Reason is the correct explanation of Assertion. (B) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion. (C) Assertion is true but Reason is false (D) Both Assertion and Reason are false.

Tardigrade Admin · Accepted Answer

Lone pair-bond pair repulsion, is strong in H2S as bond pair-bond pair repulsion becomes weak with increase in size of central atom.

Q. Assertion H-S-H bond angle in H $_{2}$ S is closer to 90 $^{\circ}$ but H-0-H bond angle in H $_{2} O$ is 104.5 $^{\circ}$ .
Reason $lp - lp$ repulsion is stronger in $H_{2} S$ than in H $_{2} O$ .

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

Assertion is true but Reason is false

Both Assertion and Reason are false.

Lone pair-bond pair repulsion, is strong in H $_{2}$ S as bond pair-bond pair repulsion becomes weak with increase in size of central atom.

Q. Assertion H-S-H bond angle in H2​S is closer to 90∘ but H-0-H bond angle in H2​O is 104.5∘. Reason lp−lp repulsion is stronger in H2​S than in H2​O.