The ion Mg(2+) has 12 protons, 10 electrons and 12, 13 0r 14 neutrons depending on the isotope.
19 Protons and 20 electrons
Three protons and two electrons.
11 protons and 10 electrons
Calcium has atomic number 20. A neutron calcium atom therefore has 20 protons and 20 electrons. Ca2+ has a charge of positive 2, so it must have 2 more protons than electrons. Ca2+ has 18 electrons.
29 protons and 27 electrons
Mn has 25 protons.
Mg has 12 protons, 12 electrons and 12 neutrons.Mg^2+ ion has 12 protons, 10 electrons and 12 neutrons. The number of protons and neutrons remains the same, but since the ion now has a 2+ charge, it has lost 2 electrons.
The ion carbon C4+ has 6 protons and 2 electrons.
29 protons and 27 electrons.
Protons: 20 Electrons: 18 Neutrons: 21
Be2+ ion has 4 protons and 2 electrons
Lead will always have 82 protons. If it has a 2+ charge, that means there are 2 more protons than electrons, so there are 80 electrons.