Question

Some plant's fertilizer compounds are $\mathit{N}{\mathit{H}}_{\mathbf{4}}\mathbf{,}\mathit{S}{\mathit{O}}_{\mathbf{4}}\mathbf{,}\mathit{C}{\mathit{a}}_{\mathbf{3}}\mathbf{,}{\left(P{O}_4\right)}_{\mathbf{2}}{\mathit{K}}_{\mathbf{2}}\mathit{O}\mathbf{,}{\mathit{P}}_{\mathbf{2}}{\mathit{O}}_{\mathbf{5}}$and $\mathit{K}\mathit{C}\mathit{L}$.

Which of these compounds contain both covalent and ionic bonds?

Short answer

Answer

${\left(N{H}_4\right)}_{\mathit{2}}S{O}_{\mathit{4}}$are $C{a}_{\mathit{3}}{\left(P{O}_4\right)}_{\mathit{2}}$compounds containing both ionic and covalent bonds.

Step-by-step solution

Step 1.  Analyzing all compounds one-by-one

${\left(N{H}_4\right)}_{2}S{O}_4\to$It contains an Ionic bond between Ammonium ion and Sulphate ion. It also contains a covalent bond between Sulphur and Oxygen.

$C{a}_{\mathit{3}}{\left(P{O}_4\right)}_{\mathit{2}}\to$Bonding between Calcium ion and Phosphate ion is ionic bonding. P forms a covalent bond with O.

$K_{\mathit{2}}O\mathit{\to }$O (highly electronegative) forms an ionic bond with K (highly electropositive).

localid="1656677066049" $P_{\mathit{2}}{O}_{\mathit{5}}\mathit{\to }$All bonds are covalent whether between P and P or P and O.

$\mathrm{KCl}\to$Ionic bond between highly reactive metal and non-metal.