Sodium

Facts, Uses, & Properties

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Mar 30, 2025 - 03:14

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chemical properties of Sodium (part of Periodic Table of the Elements imagemap)

sodium (Na), chemical element of the alkali metal group (Group 1 [Ia]) of the periodic table. Sodium is a very soft silvery-white metal. Sodium is the most common alkali metal and the sixth most abundant element on Earth, comprising 2.8 percent of Earth’s crust. It occurs abundantly in nature in compounds, especially common salt—sodium chloride (NaCl)—which forms the mineral halite and constitutes about 80 percent of the dissolved constituents of seawater.

Element Properties
atomic number	11
atomic weight	22.9898
melting point	97.81 °C (208 °F)
boiling point	882.9 °C (1,621 °F)
specific gravity	0.971 (20 °C)
oxidation states	+1, −1 (rare)
electron configuration	2-8-1 or 1s²2s²2p⁶3s¹