Magnesium was discovered by Joseph Black, in England, in 1755. The element was isolated by A. A. B. Bussy and Sir Humphrey Davy in 1808.
Name: Magnesium Symbol: Mg Atomic number: 12 Atomic weight: 24.305 State: solid Group, period, block: 2, 3, s Color: shiny grey solid Classification: alkaline earth metal Electron configuration: 3s2
Density: 1.738 g.m-3 Melting point: 923 K, 650 °C, 1202 °F Boiling point: 1363 K, 1091 °C, 1994 °F
Oxidation states: 2, 1 Electronegativity: 1.31 (Pauling scale) Ionization energies: 1st: 737.7 kJ·mol-1 Covalent radius: 141±7 pm Van der Waals radius: 173 pm
There are three naturally occurring isotopes of magnesium exist, 24Mg, 25Mg, and 26Mg.