O-LevelChemistryBonding & Structure5070/12 · May/June 2014 · Q101 Mark

Sodium and magnesium are next to each other in the Periodic Table. Which statement explains the differences in the melting and boiling points of these elements?

ANa and Mg have different types of bonding.

BThe electrostatic forces of attraction are stronger in Mg.

CThe ionic bonds in Mg are stronger than those in Na.

DThe Mg atoms are larger than the Na atoms.

✓ Correct answer

B: The electrostatic forces of attraction are stronger in Mg.

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2014 Paper 1 Variant 2, question 10.

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