04.What is valency ?Explain the valency of oxygen and nitrogen with respect to hydrogen.
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The valency of oxygen is 2, because it needs two atoms of hydrogen to form water. Ammonia which is NH 3 , One atom of nitrogen combines with 3 atoms of hydrogen. The valency of nitrogen is 3 because it needs 3 atoms of hydrogen to form ammonia.
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Valency is the number of particular atoms combined with or displaced with another atom to form a compound.
Explanation:
Water which is H_2O, two atoms of hydrogen combine with one atom of oxygen. The valency of oxygen is 2, because it needs two atoms of hydrogen to form water.
Ammonia which is NH 3 , One atom of nitrogen combines with 3 atoms of hydrogen. The valency of nitrogen is 3 because it needs 3 atoms of hydrogen to form ammonia.
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