Nitrogen

Symbol NAtomic number 7
Atomic mass
14.0067
Thermal conductivity
0.000259
Atomic radius
0.75
Covalent radius
0.75
Density
0.001251
Atomic volume
17.3
Melting point
63.29
Oxidation states
3,5,4,2
Boiling point
77.25
Stable isotopes
2
Heat of vapor.
2.7928
Electronegativity
3.04
Heat of fusion
0.3604
First ionization
14.534
Specific heat
1.04
Electrical conduct.
...
Electron configuration

General descriptionNuclear data
Index

Periodic Table

Chemistry concepts
 
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Nitrogen

Nitrogen is a colorless, odorless, and tasteless gas which is composed of diatomic molecules N2. It constitutes 78% of the air by volume. At 0°C and 1 atmosphere pressure, a liter has a mass of 1.2506 grams. The gas condenses to a colorless liquid at 77.25 K and to a white solid at 63.3 K.

Nitrogen is chemically unreactive. It does not burn, and at ordinary temperatures it does not react with other elements. It is prepared commercially by distillation of liquid air. Liquid nitrogen is extremely useful in the laboratory for cooling and pumping applications.

Though mineral sources of nitrogen are rare, it does occur in a mercury sulfate called kleinite.

Nitrogen is an essential element in most of the substances which make up living organisms, including the proteins. Important compounds include fertilizers and explosives. An essential source of nitrogen for living organism is nitrogen fixation in plants since animal metabolisms cannot form the needed nitrogen compounds from N2 even though it is the major constituent of the atmosphere.


Atomic dataNuclear data
Index

Periodic Table

Chemistry concepts

Carbon chemistry concepts

Reference
Pauling
Ch. 15
 
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Nitrogen Nuclear Data

Z
A
Atomic
Mass (u)
Nuclear
Mass(GeV/c2
Binding
Energy(MeV)
Spin
Natural
Abund.
Half-life
Decay
Q
MeV
7
12
12.018613
11.1918
74.04
1
...
11ms
b+
17.34
7
13
13.005738
12.1113
94.11
1/2
...
9.97m
b+
2.22
7
14
14.003074
13.0403
104.66
1
0.99634
stable
...
...
7
15
15.000108
13.9690
115.49
1/2
0.00366
stable
...
...
7
16
16.006099
14.9061
117.98
2
...
7.13s
b-
8.68
Atomic data
Index

Periodic Table

Chemistry concepts

Reference
Rohlf
 
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