Question

The molecule that has polar covalent, non polar covalent, coordinate and ionic bond among the following

• A. $NaN{O}_3$
• B. $CuS{O}_4$
• C. $N{H}_{4}Cl$
• D. $N{H}_2-N{H}_{3}Cl$

Answer 1

The correct option is D $N{H}_2-N{H}_{3}Cl$


The bonds which are formed between two atoms which have considerable difference in electronegativity are ionic bonds.
Bonds in which the shared electron pairs belongs to one atom only are coordinate bonds.
Covalent bonds formed between same atoms are non polar covalent.
Covalent bond formed between two different atoms with some electronegativity difference are polar covalent.

(a) In $NaN{O}_3$, there is an ionic bond between $Na$ and $N$ atom, and one coordinate bond between $N$ and $O$ and rest are polar covalent bond.

(b) In $CuS{O}_4$, ionic bond is present between $Cu$ and $S$ atom, there are coordinate bond between $S$ and $O$ and also polar covalent bond between $S$ and $O$ atoms but non polar covalent bond is absent.

(c) Similarly in $N{H}_{4}Cl$, there is an ionic bond between $N$ and $Cl$ atom and also coordinate bond between $N$ and H atom along with polar covalent bonds.

(d) In $N{H}_2-N{H}_{3}Cl$, as shown in the diagram polar covalent, coordinate , non polar covalent all types of bonds are present along with an ionic bond between $N$ and $Cl$