The structural formula of pentadecane (C₁₅H₃₂) is a straight-chain alkane with 15 carbon atoms. In its condensed structural form, it looks like this:CH₃–(CH₂)₁₃–CH₃This means:One CH₃ group (methyl) at each endThirteen CH₂ groups (methylene) in the middleFull Structural Formula:CH3–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH2–CH3Each carbon atom in the middle is bonded to two hydrogen atoms, and the end carbon atoms are bonded to three hydrogen atoms.