Nitrogen is a chemical element that has
the symbol N, atomic number of 7 and atomic mass 14.00674.
Things you might not know about
Nitrogen:
1. Nitrogen
gas (N2) makes up 78.1% of the volume of the Earth's
air.
2. Your body
is 3% nitrogen by weight.
3. Coming up
too fast from scuba diving can give a diver the "bends" which is
when dissolved nitrogen in your
blood comes back out of solution and forms bubbles in your
blood.
4. Can be used
to pressurize beer kegs,
which gives the dispensed beer smoother taste and headier body.
See GC2XAY2 - Hydrogen, for an explanation
about this series of caches.