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Shreya Sampathkumar from Christ Academy, Bengaluru
Subject :NSO    Class : Class 9

Krypton (Kr) is a noble gas. The given table shows four different atoms of krypton and the number of each type of atom.

The average mass of one atom of krypton is

A82
B84
C80
D48


Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

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