Question

The correct order of solubility in water for $He, Ne, Ar, Kr, Xe$ is

• A. He > Ne > Ar > Kr > Xe
• B. Xe > Kr > Ar > Ne > He
• C. Ne > Ar > Kr > He > Xe
• D. Ar > Ne > He > Kr > Xe

Answer 1

Answer: (B)

Xe > Kr > Ar > Ne > He

Answer 2

As the size of the noble gas atoms increases down the group, the polarisation of the electron cloud becomes easier. So heavier noble gas atoms are easily polarised in polar water.