Question

If o2 exist independently then why it combines with another oxygen atom to make o3​

Answer 1

Answer:

In the stratosphere, ozone is created primarily by ultraviolet radiation. When high-energy ultraviolet rays strike ordinary oxygen molecules (O2), they split the molecule into two single oxygen atoms, known as atomic oxygen.

The atomic oxygen is very unstable as its octet is not achieved. It cannot exist independently.

So, the freed oxygen atom (also known as nascent oxygen) then combines with another oxygen molecule to form a molecule of ozone.

O2 + ℎν → 2 O•

O• + O2 → O3

NOTE: This explanation is based on grade 10 level CBSE.

Answer 2

Hey !!

Here is your answer dear

A freed oxygen atom then combines with another oxygen molecule to form a molecule of ozone. ... Because ozone and free oxygen atoms are highly unstable, they react very easily with nitrogen, hydrogen, chlorine, and bromine compounds that are found naturally in Earth's atmosphere (released from both land and ocean sources).

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