Question

What is the correct order of occurrence ($\%$ by weight) in air of $Ne , Ar$ and $Kr$ ?

• A. $Ne > Ar > Kr$
• B. $Ar > Ne > Kr$
• C. $Ar > Kr > Ne$
• D. $Ne > Kr > Ar$

Answer 1

Answer: (B)

$Ar > Ne > Kr$

Answer 2

The correct order of occurrence in air is $Ar > Ne > Kr$