Question

The compound which does not contain ionic bond is:

• A. $NaOH$
• B. $HCl$
• C. $K_{2}S$
• D. $LiH$

Answer 1

The correct option is B

$\mathrm{HCl}$

Part 1: Explanation for the correct option:

Option B: $\mathbf{HCl}$

1. An ionic bond is formed when metal cation is bonded with non-metal by transferring of electron.
2. $\mathrm{HCl}$ is formed by sharing of electrons between $\mathrm{H}\mathrm{and}\mathrm{Cl}$ atom. Therefore it is covalent bond.

Part 2: Explanation for the incorrect option:

Option A: $\mathbf{NaOH}$

It is formed when metal ion ${\mathrm{Na}}^{+}$ is bonded with ${\mathrm{OH}}^{-}$ ion forming ionic bond.

Option C: ${\mathbf{K}}_{\mathbf{2}}\mathbf{S}$

The constituent atom is $\mathrm{K}$ which is a metal and $\mathrm{S}$ is a non-metal so bonding will be ionic.

Option D: $\mathbf{LiH}$

The constituent atom is $\mathrm{Li}$ which is a metal and $\mathrm{H}$ is a non-metal so bonding will be ionic.

So, Option B is correct. $\mathrm{HCl}$ does not have an ionic bond.