If the valency of carbon is 4 and that of hydrogen is
then the molecular formula of methane is CH4..
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Solution
If the valency of carbon is 4 and that of hydrogen is 1 then the molecular formula of methane is CH4
Valency is the combining property of an atom. It is a measure of how many hydrogen atoms it can combine with.
For example, oxygen can combine with two hydrogen atoms and create a water molecule. So, the valency of the oxygen atom is two. Methane has one carbon atom combined with four hydrogen atoms to form a methane (CH4) molecule.