O-LevelChemistryAtomic Structure5070/12 · May/June 2021 · Q81 Mark

The table shows data for particles W, X, Y and Z. particle: W, proton number: 6, nucleon number: 12, number of electrons: 6; particle: X, proton number: 6, nucleon number: 14, number of electrons: 6; particle: Y, proton number: 7, nucleon number: 14, number of electrons: 7; particle: Z, proton number: 8, nucleon number: 16, number of electrons: 10. Which statements are correct? 1 W and X are isotopes of the same element. 2 Y is in Group V of the Periodic Table. 3 Z is a cation.

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A1 and 2

B1 and 3

C1 only

D2 and 3

✓ Correct answer

A: 1 and 2

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2021 Paper 1 Variant 2, question 8.

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