Question

The most abundant noble gas in the atmosphere is:
A.He
B.Ne
C.Ar
D.Kr

Answer 1

We should check the percentage of all the four noble gases in the atmosphere as all the noble gases are present in very less amount so we should discuss their composition very minutely and carefully.

Complete step-by-step answer: Talking about the noble gases they are the gases which are also called inert gases this is so because they react very slowly and in short they are less reactive in nature. We are all familiar with the periodic table so in the periodic table it occupies the eighteenth group in the table . The gases which are discussed in the question are argon ,krypton , helium and neon . we will discuss their existence in the atmosphere. As we all know that our atmosphere consists of so many gases which are nitrogen , oxygen, carbon dioxide and several inert gases which are off course in the least amount as compared to other gases but they do exist. As we already discussed, they are in small amounts but amongst the above given argon is found in the abundant amounts in the atmosphere.
Argon is found in the earth’s crust so present in the abundance.
Further discussing more about the noble gases they are odourless and colourless in nature and as discussed least reactive and considered as one of the stable gases. They are very useful for applications where the reactions are not to be considered . And while discussing the periodic table we have discussed that the gases which do not have the lone pair of electrons in the outermost shell are called as inert and these are the same one we are talking about here.

Note: All the four gases are obtained from air and using the method of fractional distillation they are basically obtained.