Nitrogen
Element project
Nitrogen
The element is nitrogen and the symbol is N. The atomic number is 7 and the mass number is 14. The period number is 2 and the state of matter is gas. The group number is 15 and the group name is 5A. Nitrogen is a nonmetal.
Oil
Used to refine oil.
Cold
Used as a refrigerant.
Steel
Used in the processes of steel.