1.

2. Define the term ualency, with reference towater and amoninian compound spectively​

Answer»

Answer:

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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