Due to double bonds in the carbon chain of an unsaturated fatty acid, there are fewer hydrogens than those found in saturated fatty acids.
What is an unsaturated fatty acid?
An unsaturated fatty acid can be defined as a carboxylic acid that contains one or more carbon-carbon double bonds.
As a result of the double bonds in unsaturated fatty acids, they are liquid at lower temperature because they aren't tightly packed together.
Consequently, there are fewer hydrogens in unsaturated fatty acids than those found in saturated fatty acids because of the double bonds in its carbon chain.
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