Question

What is a understandable explanation of bonding in ammonia?

In terms of polar and non polar molecules

Answer 1

Ammonia is a polar molecule.

Explanation:

Since nitrogen has a much higher electronegativity than hydrogen `(3.04>2.2)`, it pulls the electrons towards its own nucleus, and so the electrons spend most of their time near nitrogen's nucleus, and thus leaving the hydrogen a slight positive charge on the outside, while nitrogen's lone unpaired electrons produce a slight negative charge on the opposite side.

This makes the molecule polar.

Have a look at this picture:

As you can see here, there are lone electrons in the nitrogen atom, so they give the molecule a negative charge on one end, and the positive hydrogen atoms give a positive charge, and thus making the whole molecule polar.