JEE Main 2020Chemistryd and f Block ElementsMediumMCQ

JEE Main 2020d and f Block Elements Question with Solution

JEE Main 2020 (08 Jan Shift 2)

Question

Hydrogen has three isotopes A, B and C. If the number of neutron(s) in A, B and C respectively, are x, y and z, the sum of x, y and z is

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Show full solutionCorrect option: A
Correct answer
A3

Step-by-step explanation

Hydrogen has three isotopes
 
Isotopes Number of neutrons
Protium  1 1 H 0
Deutrium  1 2 H 1
Tritium   1 3 H 2

Hence, the sum of neutrons are 3.

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About this question

This is a previous-year question from JEE Main 2020, covering the d and f 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.