JEE Main 2021 — S Block Elements Question with Solution
From: JEE Main 2021 (Online) 31st August Evening Shift
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 :
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: A
Correct answer
ABoth (A) and (R) are correct but (R) is not the correct explanation of (A)
Step-by-step explanation
Lithium salts are hydrated due to high hydration energy of Li+
Li+ due to smallest size in IA group has highest polarizing power.
Li+ due to smallest size in IA group has highest polarizing power.
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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.