JEE Main 2020Chemistrys Block ElementsEasyMCQ

JEE Main 2020s Block Elements Question with Solution

JEE Main 2020 (02 Sep Shift 2)

Question

Two elements A and B have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are :

Choose an option

Show full solutionCorrect option: D
Correct answer
DLi and Mg

Step-by-step explanation

Li and Mg do not form solid bicarbonate. But react with N2 to give nitrides. Both of them have similar properties due to diagonal relationship.
6 Li+N2Δ 2 Li3N
3 Mg+N2ΔMg3N2

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About this question

This is a previous-year question from JEE Main 2020, covering the s Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.