O-LevelChemistryAtomic Structure5070/11 · May/June 2020 · Q231 Mark

The diagram shows part of the Periodic Table. Which element has the highest proton number and which element has the largest number of valence electrons?

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Ahighest proton number: Ca, highest number of valence electrons: Ca

Bhighest proton number: Ca, highest number of valence electrons: Cl

Chighest proton number: Li, highest number of valence electrons: Ca

Dhighest proton number: Li, highest number of valence electrons: Cl

✓ Correct answer

B: highest proton number: Ca, highest number of valence electrons: Cl

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Topic: Atomic Structure, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2020 Paper 1 Variant 1, question 23.

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