Question

give two examples of .... organic compound , complex compound, inorganic compound , metalloid, element with valency 1 , element with valency 2.

Answer 1

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organic compound - coal , graphite , diamond .

inorganic compound - H2O , carbon monoxide , carbon dioxide .

metalloid - silicon , germanium , boron .

element with one velency - hydrogen , carbon.

element with two valency - helium, oxygen .