Nitrogen Essay

Nitrogen Essay

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Nitrogen


Nitrogen, symbol N, gaseous element that makes up the largest
portion of the earth's atmosphere.
The atomic number of nitrogen is 7. Nitrogen is in group 15 (or Va) of
the periodic table.

Nitrogen was discovered by the British physician Daniel
Rutherford in 1772 and recognized as an
elemental gas by the French chemist, Antoine Laurent Lavoiser about
1776.

Nitrogen is a colorless, odorless tasteless, nontoxic gas. It
can be condensed into a colorless
liquid, which can be compressed into a colorless, crystalline solid.
Nitrogen exists in two natural forms,
and four radioactive forms (artificial). Nitrogen melts at -210.01
degrees C, (-349.02 F), boils at -195.79 C
(320.42 F), and has a density of 1.251 g/liter at 0 C (32 F) and 1
atmosphere pressure. The atomic weight
of nitrogen is 14.007.

Nitrogen is obtained from the atmosphere by passing air over
heated copper of iron. The oxygen
is removed from the air, leaving nitrogen mixed with inert gases. Pure
nitrogen is obtained by fractional
distillation of liquid air; because l...

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