Answer:
this is the answer
Explanation:
If someone tells Atomic mass of oxygen is 16, then it means that One the mass of an atom of a oxygen expressed in atomic mass units is 16 It is approximately equivalent to the number of protons and neutrons in the atom of oxygen (the mass number) or to the average number allowing for the relative abundances of different isotopes of oxygen.
Atomic mass Of oxygen is 15.99u or 15.99 amu.
And the mass no. Of oxygen is 16 because total no. Of protons and neutrons (in oxygen 16) is 16.
8 protons+ 8neutrons
So we can say that mass no. And atomic mass are different things.
Then, the atomic mass of oxygen is not 16 rather 15.99amu or 15.99u
