Alkyl groups are a type of hydrocarbon group derived from alkanes by removing one hydrogen atom. They are represented by the general formula CₙH₂ₙ₊₁, where "n" is the number of carbon atoms. Common examples include the methyl group (C₁H₃) and the ethyl group (C₂H₅). Alkyl groups are often used in organic chemistry to modify the properties of molecules. These groups can be attached to various functional groups, influencing the behavior and reactivity of compounds. Alkyl groups play a crucial role in the structure of many organic compounds, including alkenes, alkynes, and aromatic compounds. Their presence can affect boiling points, solubility, and overall chemical reactivity.