JEE Main 2021 — s Block Elements Question with Solution
JEE Main 2021 (31 Aug Shift 2)
Question
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Lithium salts are hydrated.
Reason (R) : Lithium has higher polarising power than other alkali metal group members.
In the light of the above statements, choose the most appropriate answer from the options given below :
Choose an option
Show full solutionCorrect option: C
Step-by-step explanation
Li salts are hydrated , because lithium-ion has high hydration enthalpy.
Smaller the size of cation more is the polarising power.
Polarising power order:
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This is a previous-year question from JEE Main 2021, 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.