Question

Nitrogen is slightly _________ than air.

Answer 1

• Nitrogen (N₂) is a colorless, odorless and tasteless gas that makes up 78.09% (by volume) of the air we breathe.
• Nitrogen is denser than air because when liquid nitrogen boils, the nitrogen gas pools on the floor.
• This isn't because the nitrogen is denser but that the cold gas Nitrogen (N₂) is denser than the warm gas (air) around it. Our atmosphere is held to the earth's surface by gravity.

Therefore, Nitrogen is slightly lighter than air.