JEE Main 2022ChemistryStructure of AtomEasyNumerical

JEE Main 2022 — Structure of Atom Question with Solution

JEE Main 2022 (26 Jul Shift 2)

Question

Consider an imaginary ion X3-2248. The nucleus contains 'a'% more neutrons than the number of electrons in the ion. The value of 'a' is

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Show full solutionCorrect answer: 4
Correct answer
4

Step-by-step explanation

X22483-

In an atomic representation XZA

Z is atomic number = 22

A is atomic mass number = 48.

No. of protons  = Z = 22

No. of neutrons =A-Z = 48-22 = 26

No. of electrons =P-charge = 22+3 = 25

% of extra neutrons than electrons =26-2525×100=4 % = a%

So, the value of a=4.

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About this question

This is a previous-year question from JEE Main 2022, covering the Structure of Atom 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.