12
Three.
Magnesium has 25 protons
Silver or Gray.
Magnesium is a metal.It is a solid.
The melting point of Magnesium is about 650 deg C.
It has only two.They are zero and +2.
Magnesium "MG" is a solid at room temperature.
Magnesium is an Alkaline Earth element. It is a metal, and is very reactive.
2 electrons are in magnesiums last energy level
Because there are now 2 magnesiums and 2 oxygena after they have reacted
magnesiums atomic number is 12 and has atomic mass of 24.3050 its element symbol is Mg melting point is 923 Kelvins or 650 C and was discovered in 1755 by Joseph Black of England, and was isolated by Sir Humphrey Davy in 1808. it is a solid element and used for old fashion flash photography missiles, airplanes, flares, and pyrotechnics.