Draw the electron distribution diagram for the formation of Carbon dioxide $\left({\mathrm{CO}}_2\right)$ molecule.

Give an example for the following statement.

A compound in which two Covalent and one Coordinate bonds are formed.

Identify the incorrect statement and correct them.

The electrons which are not involved in bonding are called valence electrons.

Find the oxidation number of the element in the following compound.

$\mathrm{N}$ in ${\mathrm{HNO}}_3$.