Question

Does ${\mathrm{HNO}}_3$ contains a coordinate bond?

Answer 1

Explanation with a diagram:

A coordinate bond is a nitric acid (${\mathrm{HNO}}_3$).

The nitrogen atom is bonded to three oxygen atoms: one via a single chemical bond, another via a double chemical bond, and another via a basic (coordinating) chemical bond, Aqua Fortis have a coordination chemical bond.

Diagram:

1. The Lewis structure is ${\mathrm{HNO}}_3$ best thought of as${\mathrm{NO}}_3$ with at least one oxygen atom attached to it.
2. Many acids exhibit this pattern, calculating the total number of valence electrons in the ${\mathrm{HNO}}_3$ Lewis structure.
3. Determine the percentage of valence electrons in ${\mathrm{HNO}}_3$and wrap them around the central atom to complete the octet. Be sure to use the number of valence electrons you found earlier.
4. ${\mathrm{HNO}}_3$ Lewis structure has $24$ valence electrons.
5. Two atoms share a pair of electrons to form a chemical bond. Because the electron pair is attracted by both nuclei.

Hence, ${\mathrm{HNO}}_3$ ,it is a coordinate bond.