Question

how to calculate atomic mass of oxygen

Answer 1

the atomic number of oxygen is 8 and its atomic mass is 16.

Answer 2

atomic mass of oxygen is 16 .
the following steps are the used to calculate the mass of an element .
like oxygen .it is the even number so we multiply it atomic number by 2 .


you know that it atomic number is 8 and we multiply 8 by 2 to the answer will come that 16