Question

Determine which pair of atoms has the greatest polarity.

Answer 1

According to the  chart represented above, I have determined the pair of atoms which has the greatest polarit and I am pretty sure that it is the first option from the scale :A. Al-Si. I consider this to be correct due to their incredible difference difference in electronegativity.
Hope it helps!

Answer 2

Answer: Option (C) is the correct answer.

Explanation:

Atoms which have high difference in electronegativity will be more polar in nature.

This is because more electronegative atom will attract the electrons more towards itself. And, this causes development of a partial negative charge on the electronrgative and a partial positive charge will develop on the atom from which electrons have been withdrawn.

For example, N-H will be polar in nature because of the difference in electronegativity of N and H.

Whereas Al-Si, S-Cl, and C-N are all non-metals with not much difference in electronegativity.

Thus, we can conclude that N-H pair of atoms has the greatest polarity.