The number of protons is 12, the number of electrons is 10, the number of neutrons is different for each isotope.
It has 12 protons.
There are 10 electrons in an Mg2+ ion.
there are 10 electrons.
Mg2+: [1s22s22p6]
1.2 equivalents
Magnesium, ion (Mg2+)
Mg2+
The electron configuration for a magnesium cation Mg2 plus is 1s2.2s2.2p6.
Magnesium's atomic number is 12. Thus, neutral magnesium would have 12 electrons. Mg2+ therefore has 2 less electrons, or 10.
Mg3N2
Mg2+ is (theoretically speaking) a Lewis acid, but I don't know how strong.
[Ne] or [He]2s22p6
Mg2+