Question

THIS IS SO IMPORTANT PLEASE HELP!

"Determine the number of protons, electrons, and neutrons present in an atom of magnesium (Mg). Explain how you determined your answer using complete sentences"

will get 20 points-ANSWER CORRECTLY

Answer 1

Protons: 12
Neutrons: 12
Electrons: 12

The atomic number of Magnesium is 12, so it has to have 12 protons. The atomic mass of Magnesium is 24, so it has to have 12 neutrons since 12+12=24 (electrons don't have weight). You can tell it has 12 electrons because the electrons are always the same number as the protons.