Nitrogen exists in thousands of compounds as Proteins , Alkaloids , oxides in air , fertilizers etc. the simple compounds are NH3,HNO3, NCl3 etc.
It is an element.
Nitrogen is an element
Nitrogen is an element because it consists of same types of atoms while a compound consists of at least two different types of atoms.
Liquid nitrogen is an element.
Nitrogen is an element. It can be found in the periodic table.