Nitrogen

Nitrogen is the 7th element in the Periodic Table and has N for the symbol. It was originally called Azote, which is a Greek term for "lifeless". It is a non-metal.

Properties
Nitrogen has 7 protons and electrons in total, and it has a mass number of 14, meaning that it has 14 neutrons. Nitrogen is the main component of air, making up 78% of any volume of air.

Nitrogen has several compounds. The most common is ammonia (NH3), which is commonly used as a household cleaner. It has one nitrogen and three hydrogen atoms.