Answer pl you get 10 points bc i selected 15!

The answer would be 13.

To find the atomic mass of a atom, you would add the number of protons and the number of neutrons together. Electrons don't take up much or any of the mass of an atom.

(number of protons) + (number of neutrons) = 7 + 6 = 13

The answer would be 13.

I hope this helps.