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CAIE A-Level Chemistry 3.6.2 Electronegativity and Bond Polarity

Practise moving from electronegativity difference to bond dipoles and then using shape to find the overall molecular dipole.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • assign δ− to the more electronegative atom and show the bond-dipole direction correctly
  • compare bond-dipole magnitude using electronegativity differences when other factors are comparable
  • combine bond-dipole vectors with molecular geometry to decide whether they reinforce or cancel

3.6.2—Electronegativity and bond polarity question 1

[Maximum number: 2]

The Pauling electronegativity values of elements can be used to predict the chemical properties of compounds.

Use the information in Table 1.1 to answer the following questions.

Table 1.1

Table 1.1

Complete Table 1.2 by placing a tick (✓)(\checkmark) to show which of the compounds have molecules with an overall dipole moment.

Table 1.2

Table 1.2

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