CourseCourseConceptConceptDocumentDocument

CAIE A-Level Chemistry AS 13.3.4 Terms Planar When Describing the Arrangement Questions

Practise deciding which atoms lie in one plane by applying sp2 trigonal-planar geometry and restricted pi bonding.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • use trigonal-planar sp2 centres to place each atom directly bonded around C=C in the same plane
  • extend planarity only through connected geometry that constrains the atoms, rather than assuming the whole molecule
  • distinguish local planarity at an alkene or carbonyl from tetrahedral sp3 centres that can break overall planarity

CAIE A-Level Chemistry AS 13.3.4 Terms Planar When Describing the Arrangement Questions question 1

[Maximum number: 1]

In which molecules do all the carbon atoms lie in the same plane?
1 2,3-dimethylbut-2-ene
2 propane
3 cyclohexane

A

1, 2 and 3 are correct

B

1 and 2 only are correct

C

2 and 3 only are correct

D

1 only is correct

All question bank results loaded