O-LevelChemistryAtomic Structure5070/11 · May/June 2014 · Q51 Mark

Which electronic configurations represent three metallic elements in the same period of the Periodic Table?

Aelement 1: 2, 8, 7, element 2: 2, 8, 8, element 3: 2, 8, 1

Belement 1: 2, 1, element 2: 2, 8, 1, element 3: 2, 8, 8, 1

Celement 1: 2, 2, element 2: 2, 3, element 3: 2, 4

Delement 1: 2, 8, 1, element 2: 2, 8, 2, element 3: 2, 8, 3

✓ Correct answer

D: element 1: 2, 8, 1, element 2: 2, 8, 2, element 3: 2, 8, 3

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2014 Paper 1 Variant 1, question 5.

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