| Property | Value |
|---|---|
| Atomic number | 15 |
| Atomic weight | 30.9737622 amu |
| Element family | Non-metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 31P: 100% |
| Previous element | Silicon |
| Next element | Sulfur |
| Density | 1.82 g/cm3 (STP) |
| Melting | 44.1 (P4) °C |
| Boiling | 280(P4) °C |
| Covalent radius | 1.11 Å |
| Van der Waals radius | 1.8 Å |
| Ionic radius | 0.38 Å |
| First ionization potential | 10.486 eV |
| Electron affinity | 0.747 eV |
| Electronegativity | 2.19 |
| Discovery year | 1669 |
Phosphorus is an element number 15 from non-metals family. Its symbol is P. Phosphorus atomic weight is 30.9737622 amu. P stable and long lived isotopes are 31P: 100%. Phosphorus electronic configuration is 1s22s22p63s23p3. Sample compounds that contain Phosphorus are H3PO4, Ca3(PO4)2, Na2HPO4, Na3PO4, (NH4)3PO4, KH2PO4.
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