Elements
7

N

Nitrogen

Nitrogen (N) exists as a colourless, odourless gas in the earth’s atmosphere. Comprising 79% of the earth atmosphere it is very abundant. It has the atomic number 7 in the periodic table and belongs in Group 15. It is a non metal. It’s symbol is N.

Nitrogen is an abundant chemical element that exists in the atmosphere as a diatomic molecule where two atoms of Nitrogen share 3 pairs of electrons in a triple bond. Nitrogen makes up 78% of the atmosphere and is breathed in and exhaled by humans but is not taken into the human body. Despite this, Nitrogen is a vital component in construction of proteins, amino acids and DNA. It is especially important in plant development and exists in soil as the compound Ammonia. Nitrogen is widely used in the creation of Ammonia in the Haber process as a fertiliser and is used to make explosives such as TNT. Nitrogen was discovered in 1772 by the physician Daniel Rutherford but has been known as a compound in nitric acid and ammonia since the middle ages. It is located in Group 15. It is a non metal gas at room temperature and it has a melting point of -210°c and a boiling point of -195°c. Whilst inert when breathed in by humans Nitrogen poses several risks to divers through Nitrogen Narcosis and the Bends. Nitrogen bubbles created in human tissue expands when divers ascend to the surface making it dangerous to ascend to quickly or spend too much time underwater.

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FAQ's

What is the Melting Point for Nitrogen?

Nitrogen has a Melting Point of -209.86°F, meaning at -209.86°F it will turn to a liquid.

What is the Boiling Point for Nitrogen?

Nitrogen has a Boiling Point of -195.8°F, meaning at -195.8°F it will turn to a Gas.

What is the Electronegativity of Nitrogen?

Nitrogen's Electronegativty is 3.04. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Nitrogen?

Nitrogen has a Heat of Vaporization of 2.7928 kJ/mol.

Uses

Primarily to produce ammonia and other fertilizers. Also used in making nitric acid, which is used in explosives. Also used in welding and enhanced oil recovery.

Sources

Obtained from liquid air by fractional distillation.

7
Protons
7
Electrons
7
Neutrons

N

Element Symbol
N
Atomic Weight
14.007
Atomic Number
7
State
Gas
Melting Point
Unknown
-209.86
°C
Boiling Point
-195.8
Unknown
°C
Heat of Vaporization
2.7928
Unknown
kJ/mol
Crystal Structure
Hexagonal
Thermoconductivity
0.0002598
Unknown
W/cmK
Shells
2,5
Group
Non-Metal
Period
2
Block
P Block
Orbitals
[He] 2s2 2p3
Coefficient of Thermal Expansion
240 10^-6 K^-1
Covalent Radius
0.75 Å
Density at 293K
0.0012506 g/cm³
Electrical Conductivity
--
First Ionization Potential
14.5341 V
Second Ionization Potential
29.601 V
Third Ionization Potential
47.448 V
Ionic Radius
1.71 (-3) Å
Oxydation States
(±3),5,4,±2,±1
Lattice Parameter
--
Lattice Parameter 2
--
Lattice Parameter 3
--
Pronounced

NYE-treh-gen

Discovered by

Daniel Rutherford

Discovery date

1772

Orbital configuration
2,5

Download the Periodic Table

Explore Other Non-Metals

1.008
1

H

Hydrogen
15.999
8

O

Oxygen
30.974
15

P

Phosphorus
32.06
16

S

Sulphur
78.971
34

Se

Selenium
12.011
6

C

Carbon
Non-metals are the substances that do not exhibit such characteristic of metals as hardness, mechanical adaptability or the ability to conduct electricity. This series contains a few non-metals located in different groups of the periodic table: hydrogen (H), carbon (C), nitrogen (N), phosphorus (P), oxygen (O), sulfur (S) and selenium (Se).
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