Question

an atom has 8 protons and 8 neutrons what is its atomic no. and atomic mass​

Answer 1

Explanation:

Since oxygen has 8 protons and 8 neutrons, the atomic mass of oxygen is 16, which is the sum of protons and neutrons.

Answer 2

Answer:

Mass number=sum of proton and Electron

=8+8=16

atomic number is equal to no. of Electron or no. of proton

atomic number=8

hence it is oxygen