O-LevelChemistryAtomic Structure5070/12 · May/June 2020 · Q71 Mark

The diagram shows the relative mass and the relative charge of two particles, O and ●, present in atoms and ions. Which of these particles are present in a hydrogen atom and in a hydrogen ion?

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AH: both O and ●, H⁺: both O and ●

BH: both O and ●, H⁺: O but not ●

CH: ● but not O, H⁺: neither O nor ●

DH: O but not ●, H⁺: ● but not O

✓ Correct answer

C: H: ● but not O, H⁺: neither O nor ●

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2020 Paper 1 Variant 2, question 7.

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