Question

What is the physical state of neon at room temperature?

Answer 1

Hint : We know that to give the state of neon at room temperature, we should first know about neon. We should know that neon is the fourth most abundant element in the universe; only $0.0018$ of the earth's atmosphere is neon.

Complete Step By Step Answer:
So, first of all we should know about neon. We know that neon is a noble gas and has been assigned the atomic number $10$ and it is present in group 18 of the periodic table. It is present in a noble group of gases. We should know that it is chemically inert gas and non-toxic in nature. It should be noted that, there is no threat to the environment and has no impact since it is non-reactive and does not form compounds. This gas has no ecological damage. We should know that Neon was discovered by British chemist Sir William Ramsay in $1898.$ We should know that Neon is the second lightest inert gas.
Since neon gas is a noble gas, therefore it is non-reactive and does not form compounds quickly. Hence generally, neon gas is not a threat to environmental issues as such. But there are many uses of neon elements. Neon generally forms an unstable hydrate. It can also perform exotic compounds with halogens like fluorine being an inert element. Neon has $10$ electrons, protons and neutrons each. It has two electron shells. The normal boiling point of neon is $-246.0{{~}^{\circ }}C.$ This exceptionally low boiling point reflects the lack of intermolecular (here interatomic) interactions.

Note :
Remember that we should note about one important application of neon and helium. We should know that mixture of helium and neon is used for respiration by marine divers in the sea since helium is less soluble in blood than nitrogen at high pressure. We should know that liquefied neon is relatively expensive for small quantities; the price of liquid neon can be more than $55$ times that of liquid helium.