Question

Assertion (A) The structure of $H _{2} O$ is similar to $SO _{2}$.
Reason (R) In both molecules $\left( H _{2} O\right.$ and $\left.SO _{2}\right)$, the central atom has one lone pair of electrons.

• A. Both $A$ and $R$ are correct; $R$ is the correct explanation of $A$.
• B. Both $A$ and $R$ are correct; $R$ is not the correct explanation of $A$.
• C. $A$ is correct; $R$ is incorrect.
• D. $A$ is incorrect; $R$ is correct.

Answer 1

Answer: (C)

$H _{2} O$ has two lone pairs of electrons on oxygen atom. while $SO _{2}$ has one lone pair of electron.
Both possess bent shape as shown below :

Due to $l p$-lp repulsion, it has bent shape.

Due to $l p-b p$ repulsion it has bent shape. Thus, $A$ is correct but $R$ is incorrect.