O-LevelChemistryMetals & Reactivity5070/11 · Oct/Nov 2022 · Q51 Mark

The diagram shows the outer shell electrons of the atoms of two elements, Q and R. The sulfate of Q is insoluble. Element R is gaseous at room temperature and pressure. Which row could be correct?

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A12 35.5

B12 80

C56 80

D56 35.5

✓ Correct answer

D: 56 35.5

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Topic: Metals & Reactivity, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2022 Paper 1 Variant 1, question 5.

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