NITROGEN, N (7)

Nitrogen in its molecular form N2, is a colourless and odourless gas at room temperature and is 78 percent of our Earth’s Atmosphere.

ELEMENT BRIEF

1772 by Daniel Rutherford, Scotland.

DISCOVERY

Greek, 'nitron genes' meaning 'nitre' and 'forming' and the Latin 'nitrum'.

ETYMOLOGY

Nitrogen

ELEMENT

N

SYMBOL

7

ATOMIC NUMBER

7727-37-9

CAS NUMBER

ELEMENTAL SPECTRUM

Colourless

ELEMENTAL COLOUR

1.000'298

REFRACTIVE INDEX

-

POISSON RATIO

11.196 cm³

MOLAR VOLUME

-

BRINELL HARDNESS

-

MOHS HARDNESS

-

VICKERS HARDNESS

334 m/s, Mach 0.973'8

SPEED OF SOUND

-

BULK MODULUS

-

SHEAR MODULUS

-

YOUNG MODULUS

ALLOTROPES

63.05 K, -210.10 °C

MELTING POINT

77.36 K, -195.79 °C

BOILING POINT

-

AUTOMATIC IGNITION

-

FLASHPOINT

126.21 K, -146.94 °C

CRITICAL TEMPERATURE

3.39M Pa, 33 Atm

CRITICAL PRESSURE

0.025'830 W/(m K)

THERMAL CONDUCTIVITY

-

THERMAL EXPANSION

1,040 J/(kg K)

SPECIFIC HEAT

0.360 kJ/mol

HEAT FUSION

2.790 kJ/mol

HEAT VAPORISATION

-

HEAT COMBUSTION

-

CURIE POINT

-

NEEL POINT

7/5

ADIABATIC INDEX

Gas

PHASE

-

ELECTRICAL TYPE

-

CONDUCTIVITY

-

RESISTIVITY

-

SUPERCONDUCTING POINT

Diamagnetic

MAGNETIC TYPE

-0.000'000'010'0

MASS SUSCEPTIBILITY

-0.000'000'000'140'10

MOLAR SUSCEPTIBILITY

-0.000'000'012'51

VOLUME SUSCEPTIBILITY

Non Metal

CLASSIFICATION

14.006'743'1

ATOMIC WEIGHT

56 pm

ATOMIC RADIUS

71 pm

COVALENT RADIUS SINGLE BOND

60 pm

COVALENT RADIUS DOUBLE BOND

54 pm

COVALENT RADIUS TRIPLE BOND

155 pm

VAN DER WAALS RADIUS

[He]2s²2p³

ELECTRON CONFIGURATION

Hexagonal, Primitive

CRYSTAL STRUCTURE

-

DENSITY AS SOLID

-

DENSITY AS LIQUID

1.251'00 g/cm³

DENSITY AS GAS

P6₃/mmc

SPACE GROUP NAME

194

SPACE GROUP NUMBER

π/2, π/2 2π/3

LATTICE ANGLES

386.1, 386.1 626.5 pm

LATTICE CONSTANTS

3

VALENCE

3.04

ELECTRONEGATIVITY

-6.75 kJ/mol

ELECTRON AFFINITY

IONISATION ENERGY