The atomic mass of magnesium is 24.30 unified atomic mass units, abbreviated as u or amu. The atomic mass refers to the mass of a single atom of the element magnesium.
Magnesium is an alkaline earth metal, and it's a solid that is frequently found in the earth's crust. Its atomic number is 12. Magnesium has a boiling point of 2024.6 degrees Fahrenheit and a melting point of 1,202 degrees Fahrenheit. The elemental symbol for magnesium is Mg. An atom of magnesium has a radius of about 160 picometers. The element is commonly used in medicine as well as in the manufacture of electronics, automotive vehicles and aircraft.