Question

What is the atomic mass of oxygen?????​

Answer 1

Ans) 15.999 u

the atomic mass of oxygen is = 15.999 u.

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Answer 2

Answer:

Atomic mass of oxygen is 16.

The average atomic mass of oxygen is 15.9994 atomic mass units. However, this atomic mass is the average atomic mass of all the isotopes in nature. That being said, the most common isotope is the first one. So, when most of us refer to oxygen it is the oxygen with 8 neutrons