Sodium (Na)
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Sodium (Na) is the alkali metal in period 3 of the Periodic Table. It is located in group 1 and is known for its high reactivity with water and air. Sodium is commonly found in salts, such as sodium chloride (table salt).
The alkali metal in period 3 of the periodic table is sodium.
The alkali metal in period 2 is lithium (Li).
Potassium (K) is the alkali metal located in the fourth period of the periodic table.
alkali metal
potassium