O-LevelChemistryAtomic Structure5070/11 · Oct/Nov 2023 · Q41 Mark

The letters X, Y and Z represent different atoms. 40 X 19 39 Y 19 40 Z 20 Which statement is correct?

AX and Y are the same element.

BX and Z are the same element.

CX has more protons than Y.

DZ has more neutrons than Y.

✓ Correct answer

A: X and Y are the same element.

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2023 Paper 1 Variant 1, question 4.

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