ICSE Class 10 Chemistry 2017 Solved Paper

SECTION - II

Arrange the following as per the instruction given in the brackets :

Question : 39 of 86

Marks: +1, -0

{\He}, {\Ar}, {\Ne}

(Increasing order of the number of electron shells)

Solution:

\; {\He}< {\Ne}< {\Ar} .

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