JEE Main 2020ChemistryClassification of Elements and Periodicity in PropertiesEasyMCQ

JEE Main 2020Classification of Elements and Periodicity in Properties Question with Solution

JEE Main 2020 (03 Sep Shift 1)

Question

The atomic number of the element unnilennium is :

Choose an option

Show full solutionCorrect option: A
Correct answer
A109

Step-by-step explanation

un=1

nil=0

enn=9

So Atomic number =109

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About this question

This is a previous-year question from JEE Main 2020, covering the Classification of Elements and Periodicity in Properties 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.