15
30.974 u
P
Phosphorus
Nonmetal
Atomic Structure
Physical State
Group
15
Period
3
Block
p
Electron Configuration
[Ne] 3s² 3p³
Physical Properties
Atomic Mass:
30.974 u
Electronegativity:
2.19
Atomic Radius:
180 pm
Ionization Energy:
10.487 eV
Density:
1.82 g/cm³
Melting Point:
317.3 K
Boiling Point:
553.6 K
Historical Information
Discovered By:
Hennig Brand
Year Discovered:
1669