2. Its atomic number is 7.
3. It has 4 isotopes.
4. It has 5 electrons in its outer shell.
5. Colourless, odourless, and tasteless.
2. Nitrogen tanks are also used as paintball gun power sources.
3. The element is used in controlling pollution.
4. Manufacture of fertilisers.
5. Its also used for making plastic, dyes, and explosives.