Question

Sodium, potassium and other elements of group I in the periodic table is stored under kerosene, because they are highly reactive in the atmospheric air.

• A. True
• B. False

Answer 1

The correct option is A True

Group I elements in the periodic table are called alkali metals. The alkali metals are highly reactive in the atmospheric oxygen. When kept in contact with air, these metals oxidize and even catches fire reacting with the moisture in air. In order to isolate the metals fromair (or oxygen), they are preserved under kerosene.