Question

Most abundant noble gas in air is :

• A. He
• B. Ne
• C. Rn
• D. Ar

Answer 1

The correct option is D Ar

The relative abundance in dry air by volume $\left(ppm\right)$ of different noble gases is

$He$ $Ne$ $Ar$ $Kr$ $Xe$ $Rn$

$5.24$ $18.18$ $93.40$ $1.14$ $\mathrm{0.0.9}$ $trances$