H_2 O is dipolar, whereas Be F_2 is not. It is because - Vidyadip

MCQ

${H_2}O$ is dipolar, whereas $Be{F_2}$ is not. It is because

A
${H_2}O$ is linear and $Be{F_2}$ is angular
✓
${H_2}O$ is angular and $Be{F_2}$ is linear
C
The electornegativity of $F$ is greater than that of $O$
D
${H_2}O$ involves hydrogen bonding whereas $Be{F_2}$ is a discrete molecule

✓

Answer

Correct option: B.

${H_2}O$ is angular and $Be{F_2}$ is linear

(b)The overall value of the dipole moment of a polar molecule depends on its geometry and shape i.e., vectorial addition of dipole moment of the constituent bonds water has angular structure with bond angle $105°$ as it has dipole moment.

However $Be{F_2}$ is a linear molecule since dipole moment summation of all the bonds present in the molecule cancel each other.

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