Question

What is the difference between nascent oxygen and atomic oxygen?

Answer 1

nascent oxygen means oxygen that had just been made, presumably in a chemical reaction.
atomic oxygen is a oxygen that we breathe.

Answer 2

O2

It is not very much reactive

Two oxygen atoms combined with each other and form oxygen molecule.

It is not a powerful oxidizer.

O ( nascent oxygen)

It is very reactive.

In this single atom of oxygen is present.

Powerful oxidizer