15P30.974
Phosphorus
Reactive non-metal · element 15 · group 15, period 3
Quick facts
| Symbol | P |
|---|---|
| Atomic number | 15 |
| Relative atomic mass | 30.974 |
| Category | Reactive non-metal |
| Position | group 15, period 3 |
| State at 20 °C | Solid |
| Melting point | 44.1 °C |
| Boiling point | 280.5 °C |
| Density | 1.823 g/cm³ |
| Electronegativity | 2.19 |
| Electron configuration | [Ne] 3s2 3p3 |
About Phosphorus
Phosphorus has the symbol P and atomic number 15, which means every phosphorus atom has 15 protons in its nucleus and, in a neutral atom, 15 electrons. At room temperature it is a solid.
Non-metals are usually poor conductors of heat and electricity. They form covalent bonds with other non-metals and negative ions with metals.
It melts at 44.1 °C and boils at 280.5 °C.
Explore it
See where phosphorus sits, and drag the temperature slider to watch it melt and boil, on the interactive periodic table. Practise with quizzes on OmniEx.