ASChemistryCIEExam Questions3. Chemical Bonding3.1 Electronegativity & Bonding

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First teaching 2023

First exams 2025

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Electronegativity & Bonding (CIE AS Chemistry)

Exam Questions

1 hour14 questions

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3.1 Electronegativity & Bonding

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3.1 Electronegativity & Bonding

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11 mark

Which of the following dipole labels are not correct?

  • 1-3-e-5a

  • 1-3-e-5b

  • 1-3-e-5c

  • 1-3-e-5d

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21 mark

Which of these atoms is most electronegative?

  • Cl

  • Mg

  • Br

  • Na

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31 mark

Which of the following correctly describes the relationship between ionic bonding and electronegativity?

  • The more electronegative element in an ionic bond will lose electrons 

  • An ionic bond is formed when there is a difference in electronegativity of above 2.0 between two atoms

  • An ionic bond is formed when both atoms have the same electronegativity

  • An ionic bond is formed when the difference in electronegativity between the two atoms is between 1.0 and 2.0

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11 mark

Which of the following elements has electronegativity most similar to beryllium?

  • Boron

  • Aluminium

  • Silicon

  • Indium

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21 mark

Which compound is the most ionic?

  • NaCl

  • KBr

  • MgBr2

  • RbCl

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31 mark

Which substance contains polar covalent bonds?

  • ethane

  • sulfur dichloride

  • calcium bromide

  • chlorine

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11 mark

Concerning their Pauling electronegativity values, which atom is more likely to form a covalent bond with fluorine?

 

Atom

Pauling value
 

Fluorine

4.0

A

Hydrogen

2.2

B

Copper

1.95

C

Magnesium

1.3

D

Potassium

0.82

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    21 mark

    Which statement about electron affinity and electronegativity is correct?

    • Electron affinity increases down a group, but electronegativity decreases

    • Electron affinity decreases down a group, but electronegativity increases

    • Electron affinity and electronegativity both decrease down a group

    • There is no clear trend in electron affinity down a group but electronegativity decreases

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    3
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    Which of the following species is polar?

    • ICl4-

    • PF5

    • SO3

    • SH2

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