← Back to periodic table
Phosphorus (P)
Atomic number: 15 · Category: polyatomic nonmetal · Group 15 · Period 3 · Phase: Solid
Phosphorus is a chemical element with symbol P and atomic number 15. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but due to its high reactivity, phosphorus is never found as a free element on Earth. Instead phosphorus-containing minerals are almost always present in their maximally oxidised state, as inorganic phosphate rocks.
Atomic mass: 30.9737619985
Density: 1.823
Appearance: colourless, waxy white, yellow, scarlet, red, violet, black
Source: Wikipedia
Block: p
Molar heat: 23.824
CPK color:#ff8000
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p3
Configuration (semantic): [Ne] 3s2 3p3
Shells: 2, 8, 5
Electronegativity (Pauling): 2.19
Electron affinity: 72.037
Ionization energies: 1011.8, 1907, 2914.1, 4963.6, 6273.9, 21267, 25431, 29872, 35905, 40950, 46261, 54110, 59024, 271791, 296195
Periodic position
Group: 15
Period: 3
xpos: 15
ypos: 3
Spectral/Bohr images
Image
3D Model