Atomic Properties
- Atomic Number
- 15
- Atomic Mass
- 30.9740 u
- Electron Configuration
- [Ne] 3s2 3p3
- Electronegativity
- 2.19
- Block
- p-block
- Group
- 15
- Period
- 3
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 317.30 K
- Boiling Point
- 553.70 K
- Density
- 1.8230 g/cm³
About Phosphorus
Essential for DNA and ATP; exists as white and red allotropes.
Isotopes of Phosphorus
Phosphorus has 1 naturally occurring isotope.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 31P | 31 | 30.973762 | 100.00% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)