Nitrogen at Chemical Elements.com 


 

Basic Information


Name: Nitrogen
Symbol: N
Atomic Number: 7
Atomic Mass: 14.00674 amu
Melting Point: -209.9 °C (63.250008 °K, -345.81998 °F)
Boiling Point: -195.8 °C (77.35 °K, -320.44 °F)
Number of Protons/Electrons: 7
Number of Neutrons: 7
Classification: Non-metal
Crystal Structure: Hexagonal
Density @ 293 K: 1.2506 g/cm3
Color: colorless


Atomic Structure

[Bohr Model of Nitrogen]  
Number of Energy Levels: 2

    First Energy Level: 2
    Second Energy Level: 5

Isotopes

Isotope Half Life
N-13 9.97 minutes
N-14 Stable
N-15 Stable
N-16 7.13 seconds

Facts


Date of Discovery: 1772
Discoverer: Daniel Rutherford
Name Origin: Greek
Uses: forms most of atmosphere
Obtained From: from liquid air