A-LevelChemistryChemical periodicityOct/Nov 2020Paper 1 Q161 Mark
Due to their similar ionic radii, the reactions of lithium and magnesium and their corresponding compounds are very similar. Which statement about the reactions of lithium or its compounds can be predicted from this statement?
ALithium burns very slowly in oxygen.
BLithium carbonate decomposes on heating in a blue Bunsen burner flame, forming lithium oxide and carbon dioxide.
CLithium nitrate decomposes on heating, forming lithium nitrite, LiNO₂, and oxygen.
DLithium reacts very violently with cold water, producing hydrogen.
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The correct answer is B. This question tests the candidate's understanding of chemical periodicity within the Chemistrysyllabus. The examiner's mark scheme requires...
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