contestada

If an atom of the twelfth element (magnesium) has an atomic mass of 25, how many protons (p), neutrons (n), and electrons (e) does it have?

Respuesta :

marwa28
It has 12 protons and 12 electrons.
And it has 13 neutrons.
kittenkaymcc

12 protons, 12 electrons and 13 neutrons