CAIE A-Level Chemistry AS 13.3.3 Arrangement of and Bonds in Molecules Questions

Practise describing sigma and pi bonding at sp, sp2 and sp3 centres and counting each bond type in a structure.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • count every single bond as one sigma bond and the first bond of each multiple bond as sigma
  • count one pi bond in every double bond and two pi bonds in every triple bond shown
  • draw a pi bond as side-on overlap of parallel p orbitals above and below the sigma-bond axis

CAIE A-Level Chemistry AS 13.3.3 Arrangement of and Bonds in Molecules Questions question 1

[Maximum number: 1]

How many σ\sigma and π\pi bonds are in the molecule HCCCH2CH2CHC(CH3)2\mathrm{HCCCH}_{2} \mathrm{CH}_{2} \mathrm{CHC}\left(\mathrm{CH}_{3}\right)_{2} ?

A

17σ3π17 \sigma 3 \pi

B

17σ5π17 \sigma 5 \pi

C

18σ4π18 \sigma 4 \pi

D

19σ3π19 \sigma 3 \pi

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