Hydrocarbons: Alkanes, alkenes, and alkynes (and sometimes the derivatives of benzene) are represented by the symbol R. these groups are also referred to as hydrocarbyl groups since they contain only carbon and hydrogen atoms.
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Answer:
Hydrocarbons: Alkanes, alkenes, and alkynes (and sometimes the derivatives of benzene) are represented by the symbol R. these groups are also referred to as hydrocarbyl groups since they contain only carbon and hydrogen atoms.
hope you like the answer, Take care. i still did't understand the question but as per my book it has this define.
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