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O-LevelChemistryAtomic Structure5070/11 · May/June 2023 · Q21 Mark

X, Y and Z are elements. X and Y are in the same period of the Periodic Table. Y and Z are in the same group of the Periodic Table. What are possible electronic configurations for X, Y and Z?

AX: 2,4, Y: 2,7, Z: 2,8,4
BX: 2,4, Y: 2,7, Z: 2,8,7
CX: 2,4, Y: 2,8,4, Z: 2,8,7
DX: 2,8,4, Y: 2,8,7, Z: 2,4

✓ Correct answer

B: X: 2,4, Y: 2,7, Z: 2,8,7

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About this question

Topic
Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2023 Paper 1 Variant 1, question 2.

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