JEE Main 2023ChemistryS Block ElementsPhysiochemical Trends In Alkali MetalsmediumMCQ

JEE Main 2023 — S Block Elements Question with Solution

From: JEE Main 2023 (Online) 8th April Evening Shift

Question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A : Sodium is about 30 times as abundant as potassium in the oceans.

Reason R : Potassium is bigger in size than sodium.

In the light of the above statements, choose the correct answer from the options given below

Choose an option

Show full solutionCorrect option: C
Correct answer
CBoth A and R are true and R is the correct explanation of A

Step-by-step explanation

Due to bigger size of potassium, it forms more efficient lattices as compared to sodium with silicates.

The abundance of sodium in ocean is more due to the more soluble nature of salt of sodium as compared to potassium salts.

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About this question

This is a previous-year question from JEE Main 2023, 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.