Mention the abundance of noble gases in air.

Valency of noble gases is zero.

All the noble gases are colourless and tasteless monoatomic gases. In general, noble gases are least reactive and their inertness to chemical reactivity is attributed to the following reasons. Reactive and their inertness to chemical reactivity is attributed to the following reasons. (i)Except helium, all have completely filled ns^(2)np^(6) electronic configuration in their valence shells. (ii)All have high ionisation enthalpy and more positive electron gain enthalpy. However, a number of xenon compounds mainly with most electronegative elements like fluorine and oxygen have been synthesized under different conditions and fluorides of xenon have been used as an oxidising agent and a fluorinating agent in many of the chemical reactions The correct order of the abundance of various noble gases in air is :

Generally, the valency of noble gases is

Major credit for the discovery of noble gases is given to

Comment on the electron affinities of noble gases.

What prompted Bartlett to the discovery of noble gases compounds ?

Assertion :Solubility of noble gases in water decreases with increases in atomic size Reason :Solubility of noble gases in water is due to instantaneous dipole induced dipole interaction

Which is the most abundant noble gas ?

The most abundant noble gas in the atmosphere is

Assertion : Ionisation enthalpy of noble gases is zero Reason :Noble gases have fully field valance shell