Question

necessity and need of noble gases​

Answer 1

Answer:

The noble gasses often do not react with many substances and have been historically called inert gases. Generally, inert gases are used to prevent unwanted chemical reactions which degrade a sample. Oxidation and hydrolysis reactions with the oxygen and moisture in air are often these undesirable chemical reactions....

Answer 2

Answer:

necessity:

The noble gases often do not react with many substances and were historically referred to as the inert gases. Inert gases are used generally to avoid unwanted chemical reactions degrading a sample.

needs:

These undesirable chemical reactions are often oxidation and hydrolysis reactions with the oxygen and moisture in air.