Question

Why does ozone have the atomicity 3? Give reasons.

Answer 1

ozone is formed when O₂ is exposed to UV radiation . the radiation breaks gas and make it react with other gas molecule  . As the ozone is a allotropic form of oxygen it contain three oxygen atom that's why it have the atomicity 3 .

it is a oxidiser and absorbed UV AND IR radiation to protect the earth .
CFC's are major  cause of ozone depletion .

Answer 2

ozone is formed when O₂ is exposed to UV radiation . The radiation breaks gas and make it react with other gas molecule . As the ozone is a allotropic form of oxygen it contain three oxygen atom that's why it have the atomicity 3 .It is a oxidizer and absorbed UV AND IR radiation to protect the earth .
CFC's are major  cause of ozone depletion .