Question

question
choose the options below that are not characteristics of alkanes.
select all that apply:
□ linear alkanes have the molecular formula cₙh₂ₙ.
□ they have delocalized alternating carbon - carbon single and double bonds.
□ they interact through attractive van der waals forces.
□ they contain only single bonds.

Explanation:

Step1: Recall alkane formula

The molecular formula of linear alkanes is $\mathrm{C}_{n}\mathrm{H}_{2n + 2}$, not $\mathrm{C}_{n}\mathrm{H}_{2n}$.

Step2: Recall alkane bond structure

Alkanes contain only single bonds, not delocalized alternating single and double bonds.

Step3: Recall alkane intermolecular forces

Alkanes interact through van der Waals forces, so the statement "They interact through attractive van der Waals forces" is a characteristic of alkanes.

Step4: Recall alkane bond type

Alkanes contain only single bonds, so the statement "They contain only single bonds" is a characteristic of alkanes.

Answer:

• Linear alkanes have the molecular formula $\mathrm{C}_{n}\mathrm{H}_{2n}$.
• They have delocalized alternating carbon - carbon single and double bonds.