15P
Phosphorus
인 · リン
Nonmetal
Atomic number15
ElementP — Phosphorus
Atomic mass30.974
CategoryNonmetal
Group15
Period3
Electron config[Ne] 3s2 3p3
Shells2,8,5
State (RT)Solid
Melting pt44°C
Boiling pt281°C
Electronegativity2.19
Discovered1669
Main usesFertilizers, matches, DNA
2 · 8 · 5