Question

Which one of the following is most likely to form an ionic bond?

• A. $H$ and $O$
• B. $H$ and $Cl$
• C. $H$ and $N$
• D. $Na$ and $Cl$

Answer 1

Answer: (D)

Na has low I.E. and $Cl$ has high $E.A$. so they have high electronegativity difference and thus forms ionic bond.