Chapter 8, Problem 8.39CP

Interpretation Introduction

Interpretation:

The direction in which electrons are displaced should be determined by using arrows.

Concept used:

Dipole moment is a vector quantity which can be calculated as the product of charged molecule and distance between them.

Dipole moment:
It is the product of the charge and distance between them.
$\overrightarrow{P}$ = $\text{Q × r}$

Here,
$\overrightarrow{P}$-dipole moment
Q - charge 
r - distance between charges

To determine:

The direction is which electrons are displaced.