Phosphorus vs Argon
| Property | P Phosphorus | Ar Argon |
|---|---|---|
| Atomic number | 15 | 18 |
| Symbol | P | Ar |
| Name | Phosphorus | Argon |
| Category | nonmetal | noble-gas |
| Standard Atomic Weight | 30.973762 u | 39.948 u |
| Period | 3 | 3 |
| Group | 15 | 18 |
| Block | p | p |
| Phase at STP | solid | gas |
| Electron configuration | [Ne]3s23p3 | [Ne]3s23p6 |
| Oxidation states | [-3, -2, -1, 0, 1, 2, 3, 4, 5] | [0] |
| Electronegativity (Pauling) | 2.19 | N/A |
| Electron affinity | 0.7466 eV | -1 eV |
| Density | 1820 kg/m³ | 1.7837 kg/m³ |
| Melting point | 44.15 °C | -189.35 °C |
| Boiling point | 280.5 °C | -185.85 °C |
| Discovery year | 1669 | 1894 |