O-LevelChemistryBonding & Structure5070/11 · May/June 2024 · Q281 Mark

Iron has a high melting point. Which statement explains the high melting point of iron?

AEach iron cation has a strong electrostatic attraction to a 'sea' of delocalised electrons.

BIn every iron atom there is a strong attraction between the protons and the electrons.

CIron has the same structure as diamond which has a very high melting point.

DIron is an alloy and alloys have different physical properties from the elements they contain.

✓ Correct answer

A: Each iron cation has a strong electrostatic attraction to a 'sea' of delocalised electrons.

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Topic: Bonding & Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2024 Paper 1 Variant 1, question 28.

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