Give one use of Krypton.

Write two uses of the following:

Neon

Write two uses of the following:

Helium

 Write any two uses of the following:

Neon

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

List out the uses of neon.