Question

$1$ mole atom of diatomic gas at NTP will be $11.2$ litres.

Answer 1

Hint : Diatomic molecules are composed of two atoms of the same or different chemical elements. There are seven diatomic elements: hydrogen, oxygen, nitrogen, fluorine, chlorine, iodine, bromine. These elements exist in pure form in other arrangements.

Complete Step By Step Answer:
$Mole = \dfrac{{Volume}}{{22.4}}$ (At STP or NTP)
As we know, $1$ mole of gas occupies $22.4L$ at NTP.
$1$ mole of ${O_2}$ occupies $22.4L$ at NTP. ${O_2}$ contains $2$ moles of oxygen atom
As ${O_2}$ consist of two atoms, it means $1$ mole of ${O_2}$ contains $2$ mole atoms of oxygen.
Thus, we can say that $1$ mole of ${O_2}$ or $2$ mole atoms of oxygen occupy $22.4$ litres at NTP.
Therefore, $1$ mole atom of oxygen occupies $= \dfrac{{22.4}}{2} = 11.2$ litres at NTP.
This means that the volume occupied by $1$ mole atom of diatomic gas at NTP will be $11.2$ litres.

Additional Information:
In order to convert moles to atoms, we need to multiply the molar amount by Avogadro’s number. In order to convert from atoms to moles, we need to divide the atom amount by Avogadro’s number or multiply by its reciprocal.

Note :
A mole is said to be the amount of material containing $6.022 \times {10^{23}}$ . The number of particles in one mole is called Avogadro's number that is $6.022 \times {10^{23}}$ .The mole is the unit of measurement for the amount of substance in the International System of Units. The elementary entities that can be represented in moles can be atoms, molecules, monoatomic, polyatomic ions. The number of moles of a molecule may not always be equal to the number of moles of its constituent elements.