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Differentiate between OXYGEN AND NITROGEN

Oxygen
Chemical symbol: O₂
Composition in air: about 24%
Solubility: soluble in water.
Oxygen has important role in respiration and photosynthesis.

Nitrogen
Chemical symbol: N₂
Composition in air: about 75%
Solubility: less soluble in water than oxygen
Nitrogen has wide range of application in industries and also in environment. It is essential for living.