Krypton vs Antimony
| Property | Kr Krypton | Sb Antimony |
|---|---|---|
| Atomic number | 36 | 51 |
| Symbol | Kr | Sb |
| Name | Krypton | Antimony |
| Category | noble-gas | metalloid |
| Standard Atomic Weight | 83.798 u | 121.76 u |
| Period | 4 | 5 |
| Group | 18 | 15 |
| Block | p | p |
| Phase at STP | gas | solid |
| Electron configuration | [Ar]4s23d104p6 | [Kr]5s24d105p3 |
| Oxidation states | [0, 1, 2] | [-3, -2, -1, 0, 1, 2, 3, 4, 5] |
| Electronegativity (Pauling) | 3 | 2.05 |
| Electron affinity | -1 eV | 1.07 eV |
| Density | 3.733 kg/m³ | 6685 kg/m³ |
| Melting point | -157.36 °C | 630.63 °C |
| Boiling point | -153.42 °C | 1586.85 °C |
| Discovery year | 1898 | 1707 |