Question

Identify the compound with the strongest ionic bond among the following:

• A. $NaCl$
• B. $MgO$
• C. $KCl$
• D. $CsF$

Answer 1

Answer: (B)

$MgO$

Ionic bonding becomes stronger for compounds with more highly charged ions

In the given options dissociation of compounds gives monovalent ions except $MgO$.

$NaCl\to {Na}^{+}+{Cl}^{-}$

$MgO\to {Mg}^{2+}+O^{2-}$

$KCl\to K^{+}+C{l}^{-}$

$CsF\to {Cs}^{+}+F^{-}$

Hence, the correct option is $\text{B}$