15 P
Reactive nonmetal
Phosphorus
Essential for DNA and ATP.
Properties of Phosphorus
- Atomic number (Z)
- 15
- Symbol
- P
- Atomic mass
- 30.974 g/mol
- Category
- Reactive nonmetal
- Group
- 15
- Period
- 3
- Electron configuration
- [Ne] 3s² 3p³
- Electronegativity (Pauling)
- 2.19
- Atomic radius
- 98 pm
- First ionization energy
- 1012 kJ/mol
- Melting point
- 317.3 K (44.2 °C)
- Boiling point
- 553.65 K (280.5 °C)
- Density
- 1.823 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1669
Frequently asked questions
What is Phosphorus?
Phosphorus (P) is a reactive nonmetal, element number 15 on the periodic table. Essential for DNA and ATP.
What is the atomic number and atomic mass of Phosphorus?
Phosphorus has atomic number 15 and an atomic mass of about 30.974 g/mol.
What is the electron configuration of Phosphorus?
The electron configuration of Phosphorus is [Ne] 3s² 3p³.
Where is Phosphorus on the periodic table?
Phosphorus sits in group 15, period 3, and is classified as a reactive nonmetal.