What is the polarity of a Na-Br bond?

nonpolar covalent

definitely polar covalent

likely ionic

slightly polar covalent

slightly ionic

likely ionic

Explanation:

The bond between, Sodium and Bromine, in sodium bromide salt, is ionic in nature.

Since,

The difference in the electronegativity of the two atom is high.

According to Pauling scale,

The Electronegativity of Bromine = 2.96

The Electronegativity of sodium = 0.93

Hence,

The Difference in electronegativity = (2.96 - 0.93) = 2.03

Hence,

The electronegativity difference value is more than 1.8,

Therefore,

The bond is ionic in nature.