A-LevelChemistryChemical periodicity9701/12 · Oct/Nov 2021 · Q171 Mark

X is the ion of a metal which burns with a red flame. Y is an ion that reacts with concentrated H2SO4 to produce H2S. What could be the formula of a compound containing X and Y?

ABaBr2

BBaI2

CSrBr2

DSrI2

✓ Correct answer

D: SrI2

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Topic: Chemical periodicity, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2021 Paper 1 Variant 2, question 17.

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