Magnesium
![](../images/magnesium1.jpg)
Atomic symbol: Mg
Atomic number: 12
Atomic mass: 24.31
Appearance: shiny gray solid at 25°C
Group: 2
Period: 3
Series: Alkali earth mtals
Block: s
Electron configuration: 1s² 2s² 2p⁶ 3s²
Highly abundant on Earth, existing in all organisms.
Burning with a bright white flame, magnesium is used in fireworks.
![](../images/magnesium2.png)
Fun Fact! Magnesium is an essential micronutrient required by the human body for many metabolic processes, including for proper sleep. Pumpkin seeds and spinach are great sources.