Question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: The H-O-H bond angle in water molecule is 104.5°.

Reason R: The lone pair-lone pair repulsion of electrons is higher than the bond pair-bond pair repulsion.

In the light of the above statements, choose the correct answer from the options given below:

Options

• A is false but R is true.

• A is true but R is false.

• Both A and R are true, and R is the correct explanation of A.

• Both A and R are true, but R is not the correct explanation of A.

Answer 1

Both A and R are true, and R is the correct explanation of A.

Explanation:

In water, the O atom is sp³ hybridised with two B.P and two L.P electrons. The water molecule's H-O-H bond angle is 104.5° due to lone pair-lone pair, lone pair-bond pair, and lone pair-bond pair interaction.