JEE Main 2020 — S Block Elements Question with Solution
From: JEE Main 2020 (Online) 2nd September Evening Slot
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: A
Correct answer
ALi and Mg
Step-by-step explanation
Solid hydrogencarbonates are not formed
by lithium and magnesium.
– 6Li + N2 2Li3N
– 3Mg + N2 Mg3N2
– 6Li + N2 2Li3N
– 3Mg + N2 Mg3N2
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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.