Ozone is paramagnetic gas
Ozone is a paramagnetic gas, which means it is attracted by a magnetic field. Paramagnetic substances have unpaired electrons in their molecular orbitals, which results in a net magnetic moment. Ozone (O3) has a total of 18 valence electrons, with two unpaired electrons in its molecular orbitals. These unpaired electrons cause ozone to be paramagnetic.

The two oxygen-oxygen bond length in ozone are identical
The two oxygen-oxygen bond lengths in ozone are not identical. Ozone has a bent molecular geometry, with the central oxygen atom bonded to two terminal oxygen atoms. The central oxygen-oxygen bond is double bonded, while the terminal oxygen-oxygen bonds are single bonded. Due to the presence of the lone pairs on the central oxygen atom, the bond angles are less than the ideal 120 degrees, resulting in a bent shape.

O3 molecule is bent
As mentioned earlier, the ozone molecule (O3) has a bent shape. This is due to the repulsion between the lone pairs of electrons on the central oxygen atom. The bent shape of ozone can be visualized as a triangle, with the central oxygen atom at the vertex and the two terminal oxygen atoms forming the base of the triangle. This bent shape is a result of the electron pair repulsion theory, which states that electron pairs in the valence shell of an atom tend to repel each other, causing molecular geometries to adjust accordingly.

Ozone is violet-black in solid state
Ozone is not violet-black in the solid state. In fact, ozone is a pale blue gas at room temperature and pressure. It has a distinct odor and is highly reactive. When condensed into a solid, ozone forms dark blue crystals. These crystals have a violet color when observed in bulk, but appear colorless when viewed in thin layers. The violet color arises from the absorption of light in the red region of the spectrum by the ozone molecules.

In conclusion, the wrong statement among the given options is option A, which states that ozone is a paramagnetic gas. Ozone is indeed a paramagnetic gas due to the presence of unpaired electrons in its molecular orbitals.

Option a.. ozone is DIAMAGNETIC in nature