Boron vs Argon
| Property | B Boron | Ar Argon |
|---|---|---|
| Atomic number | 5 | 18 |
| Symbol | B | Ar |
| Name | Boron | Argon |
| Category | metalloid | noble-gas |
| Standard Atomic Weight | 10.8135 u | 39.948 u |
| Period | 2 | 3 |
| Group | 13 | 18 |
| Block | p | p |
| Phase at STP | solid | gas |
| Electron configuration | [He]2s22p1 | [Ne]3s23p6 |
| Oxidation states | [-5, -1, 0, 1, 2, 3] | [0] |
| Electronegativity (Pauling) | 2.04 | N/A |
| Electron affinity | 0.27972 eV | -1 eV |
| Density | 2370 kg/m³ | 1.7837 kg/m³ |
| Melting point | 2074.85 °C | -189.35 °C |
| Boiling point | 3999.85 °C | -185.85 °C |
| Discovery year | 1808 | 1894 |