Question

What is sodium?


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Answer 1

Answer:

Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is ²³Na. The free metal does not occur in nature, and must be prepared from compounds.

Answer 2

Explanation:

Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is ²³Na. The free metal does not occur in nature, and must be prepared from compounds.

Symbol: Na

Atomic mass: 22.989769 u

Atomic number: 11

Electron configuration: [Ne] 3s¹

Van der Waals radius: 227 pm

Melting point: 97.79 °C

CAS ID: 7440-23-5