Question

$H_{2}O$ is dipolar, whereas $Be{F}_2$ is not. It is because:

• A. $H_{2}O$ involves hydrogen bonding whereas $Be{F}_2$ is a discrete molecule
• B. $H_{2}O$ is linear and $Be{F}_2$ is angular
• C. $H_{2}O$ is angular and $Be{F}_2$ is linear
• D. the electronegativity of $F$ is greater than that of $O$

Answer 1

Answer: (C)

$H_{2}O$ is angular and $Be{F}_2$ is linear

Let us see the structure of both $Be{F}_2$ & $H_{2}O$ before we conclude the answer.

The Bent structure is also called Angular sometimes. Even though both the molecules have the same no. of atoms; $H_{2}O$ arranges itself into an angular geometry; Hence the dipole moments cant cancel each other; Unlike in case of $Be{F}_2$

$\therefore$ Correct answer -option C-$H_{2}O$ is angular and $Be{F}_2$ is linear, due to which the former is dipolar and whereas the latter is not.