Sodium

Sodium is an alkali metal and is highly reactive. It is the sixth most abundant element in the Earth's crust.

Atomic Structure

sodium atom electronic configuration

Atomic Information

Property	Value
Atomic Number	11
Symbol	Na
Atomic Mass	22.990 u
Electron Configuration	1s² 2s² 2p⁶ 3s¹
State at Room Temperature	Solid

Uses of Sodium

Used in street lights to produce bright yellow light.
Sodium compounds, like table salt (NaCl), are essential in food and industry.
It is used as a heat transfer agent in nuclear reactors.