12
magnesium has 12 protons
there are 12 protons in an atom of magnesium:-)
Magnesium oxide (MgO) consists of magnesium (Mg) and oxygen (O) ions. Magnesium has 12 protons, while oxygen has 8 protons. Therefore, in magnesium oxide, there are a total of 12 protons from magnesium and 8 protons from oxygen, resulting in 20 protons in total.
All magnesium atoms, regardless of the isotope, have 12 protons.
This is about magnesium element. Mg atom contains 12 protons.
Magnesium has 12 protons. Bear in mind that ionization has no effect on the number of protons, so the "2 plus" is unnecessary. Magnesium always has 12 protons, that is the definition of magnesium.
Magnesium always has 12 protons (both in neutral form and in ion form).
Each atom of the element magnesium contains exactly 12 protons.
12
The periodic table states that the atomic number of magnesium is 12. A magnesium atom would thus have 12 protons in its nucleus; any atom that has 12 protons must be a magnesium atom. Atomic number = number of protons
12 protons, 12 electrons, 12 neutrons
12