15
P
Phosphorus
Phosphorus
Phosphorus (P)
Reactive Nonmetals · Solid · Period 3 · Group 15
Element Properties
- Atomic Number
- 15
- Symbol
- P
- Atomic Mass
- 30.9738
- Category
- Reactive Nonmetals
- Standard State
- Solid
- Period
- 3
- Group
- 15
- Electronegativity
- 2.19
- Atomic Radius
- 180
- Ionization Energy
- 10.49
- Electron Affinity
- 0.75
- Oxidation States
- +5, +3, -3
- Melting Point
- 317.3 K (44.15 °C)
- Boiling Point
- 553.65 K (280.5 °C)
- Density
- 1.82
- Electron Configuration
- [Ne]3s2 3p3
- Year Discovered
- 1669
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Frequently asked questions
What is the atomic number of Phosphorus?
The atomic number of Phosphorus is 15, which equals the number of protons in its nucleus.
What is the atomic mass of Phosphorus?
The atomic mass of Phosphorus is approximately 30.9738 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Phosphorus?
The electron configuration of Phosphorus is [Ne]3s2 3p3.
Where is Phosphorus in the periodic table?
Phosphorus is located in period 3, group 15.
When was Phosphorus discovered?
Phosphorus was discovered in 1669.
Related elements
Same group
7
N
Nitrogen
14.007
33
As
Arsenic
74.922
51
Sb
Antimony
121.76
83
Bi
Bismuth
208.98
115
Mc
Moscovium
290.196