Question

give a mathematical expression for dipole moment ?

Answer 1

The product of magnitude of charge on a molecule and the distance between two charges of equal magnitude with opposite sign is equal to dipole moment.
so, dipole moment = charge x distance
= e x d

Answer 2

Answer: The expression for dipole moment is given below.

Explanation:

Dipole moment is defined as product of charges and the distance between them. The formula used to calculate the dipole moment for a pair of equal and opposite charges is given by the expression:

$p=qd$

where,

p = dipole moment between the two

q = charge

d = distance between the charges

Hence, the expression for dipole moment is given above.