What is the difference between Na and NA

Sodium is a chemical element with the symbol Na (from Latin "natrium") 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.

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 number: 11

Atomic mass: 22.989769 u

Electron configuration: [Ne] 3s¹

Van der Waals radius: 227 pm

Melting point: 208°F (97.79°C)

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