11 hydrogen atoms are present in the hydrocarbon chain having 8 carbon atoms with 3 double bonds.
There are 11 hydrogen atoms present in a hydrocarbon chain of 8 carbon atoms with 3 double bonds and the rest single bonds because 5 hydrogen atoms make a single covalent bond with carbon atom whereas the 6 hydrogen atoms make a double covalent bond with carbon atom.
In double bond, one atom bonded with two atoms so we can conclude that 11 hydrogen atoms are present in the hydrocarbon chain having 8 carbon atoms with 3 double bonds and 5 single bond.
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