O-LevelChemistryAtomic Structure5070/11 · May/June 2010 · Q201 Mark

The diagram shows part of the Periodic Table. Which pair of letters represents elements that are in the same period?

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AP and R

BP and S

CQ and T

DR and S

✓ Correct answer

D: R and S

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2010 Paper 1 Variant 1, question 20.

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