Natron

Nitrogen is a chemical element with the symbol N and atomic number 7. It's an odorless, tasteless, colorless, and mostly inert diatomic gas at standard conditions. Here are some key points about nitrogen: 1. **Origin of the Name**: The name "nitrogen" comes from French words "azote," meaning "silly air," and "gaze," meaning "gas." It was coined by French chemist Antoine Lavoisier in 1790. 2. **Discovery**: Nitrogen was discovered by English chemist Daniel Rutherford in 1772, although he referred to it as "phlogisticated air." However, it was Lavoisier who recognized nitrogen's unique properties and gave it its current name. 3. **History of Use**: Nitrogen has many uses due to its inertness. It's used in the production of ammonia (NH₃) through the Haber-Bosch process, which is crucial for fertilizers. Liquid nitrogen is also used as a coolant in cryogenic applications and as a propellant in rocket engines. 4. **Composition**: In Earth's atmosphere, nitrogen makes up about 78% by volume but only a tiny fraction of that amount (around 0.03%) is available to react with other substances because it's usually combined with oxygen or hydrogen. 5. **Isotopes**: Nitrogen has two stable isotopes: N-14 and N-15, with N-14 being more abundant. It also has several radioactive isotopes, but none of them are commonly found in nature.