7N
Nitrogen
질소 · 窒素
Nonmetal
Atomic number7
ElementN — Nitrogen
Atomic mass14.007
CategoryNonmetal
Group15
Period2
Electron config[He] 2s2 2p3
Shells2,5
State (RT)Gas
Melting pt-210°C
Boiling pt-196°C
Electronegativity3.04
Discovered1772
Main usesFertilizers, inert atmosphere
2 · 5