Magnesium

Magnesium is a mineral found in the earth, sea, plants, animals and humans. About 60% of the magnesium in your body is found in bone, while the rest is in muscles, soft tissues and fluids, including blood ( 1 ). In fact, every cell in your body contains it and needs it to function.
Symbol: Mg
Atomic mass: 24.305 u
Electron configuration: [Ne] 3s2
Atomic number: 12
Van der Waals radius: 173 pm
Melting point: 650 °C
ref: Wikipedia & Healthline