Question

Which of the following pairs will form the most stable ionic bond?

• A. $Na$ and $Cl$
• B. $Mg$ and $F$
• C. $Li$ and $F$
• D. $Na$ and $F$

Answer 1

The correct option is B $Mg$ and $F$

When we talk about the stability of ionic compounds we take into account no.of factors like charge and size of cation, size of an anion.

Since $M{g}^{2+}$ has a small size and high charge of all the actions so it's interactions with $F^{-}$will be strongest.

Hence the most stable out of all ionic compounds.

Hence, the correct option is B.