JEE Main 2014ChemistryStructure of AtomEasyMCQ

JEE Main 2014Structure of Atom Question with Solution

JEE Main 2014 (06 Apr)

Question

The correct set of four quantum numbers for the valence electrons of rubidium atom Z=37 is

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Show full solutionCorrect option: A
Correct answer
A 5, 0, 0, + 1 2

Step-by-step explanation

The electronic configuration can be written as,

1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s1

The outermost electron has i.e., Kr365s1

Principal quantum number=5

Azimuthal quantum number=0 (corresponds to s)

Magnetic quantum number=0

Spin quantum number = + 1 2 (positive spin)

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About this question

This is a previous-year question from JEE Main 2014, 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.