What is the advantage of using inert gasses in a process?

Explanation:

Because of non-reactive properties of the inert gases, these gases are useful to prevent the undesirable chemical reactions to happen.

They provide a non-explosive environment. They are also cheap and economical.

Food is packed in the inert gas to prevent rancidity. This also prevents bacteria from growing.  

The gases prevents the chemical oxidation by the oxygen in the normal air.  

Helium is used in oxygen cylinders and also as a coolant in gas cooled reactors.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

the increase of protons   hope this