12
Calcium has a larger atomic radius than magnesium and a smaller atomic radius than potassium. This trend is due to the increase in number of protons and electrons as you move across the period on the periodic table from magnesium to calcium to potassium.
It has only two.They are zero and +2.
Magnesium's period number is 3. It is found in period 3 of the periodic table.
Mg
Silver or Gray.
Magnesium has 25 protons
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.
Magnesium is a metal.It is a solid.
this elemnt has an atomic number that is double the atomic number of silicon?
Well... I think its Magnesium Sulphur CozMg-MagnesiumS-SulphurSo I Just Added the Both Together!
the answer is that it is called a atomic number.
The atomic number is equal to the number of the protons in the atomic nucleus.