Question

Given ${O_3}$ is a diamagnetic molecule. If it has all $O - O$ bond length equal then enter $1$, else enter $0$.

Answer 1

Before going through the question let us first talk about p-block elements. The last electron in a P block element enters one of the three p-orbitals of its respective shell. There are six classes of p-block elements since a p-subshell has three degenerate p-orbitals, each of which can hold two electrons.

Complete answer:
The inorganic molecule ozone, also known as trioxygen, has the chemical formula ${O_3}$ . It's a light blue gas with a strong pungent odour. It is a much less stable allotrope of oxygen than the diatomic allotrope ${O_2}$ , breaking down to ${O_2}$ in the lower atmosphere (dioxygen). UV light and electrical discharges in the Earth's atmosphere combine to produce ozone, which is made up of dioxygen. It is found in very low concentrations throughout the latter, with the highest concentration high in the stratosphere's ozone layer, which absorbs the majority of the Sun's ultraviolet (UV) radiation.
Diamagnetic electrons are those that are coupled together in an orbital or have a complete spin of zero. Diamagnetic atoms are those that have all of their electrons be diamagnetic. An unpaired electron is referred to as a paramagnetic electron. Magnetic fields repel diamagnetic atoms.
Now, coming to the given question,
Two $O - O$ bonds are equal in ${O_3}$ due to resonance and have bond order of $1.5$ (bond length =$128{\text{ }}pm$ , angle =$116.5$ ). Since all of the electrons tend to be coupled, the system is diamagnetic.
As a result, the above statement is right,so mark 1 as the correct answer.

Note:
Ozone is a potent oxidant (far more so than dioxygen) with a wide range of industrial and consumer applications. However, above concentrations of around $0.1{\text{ }}ppm$ , ozone damages mucous and respiratory tissues in animals, as well as tissues in plants, due to its high oxidising capacity. Although this makes ozone a serious respiratory threat and pollutant near the atmosphere, a higher ozone layer concentration (from two to eight ppm) is advantageous because it prevents harmful UV light from reaching the Earth's surface.