Hydrogen vs Einsteinium
| Property | H Hydrogen | Es Einsteinium |
|---|---|---|
| Atomic number | 1 | 99 |
| Symbol | H | Es |
| Name | Hydrogen | Einsteinium |
| Category | nonmetal | actinide |
| Standard Atomic Weight | 1.007975 u | 252 u |
| Period | 1 | 7 |
| Group | 1 | N/A |
| Block | s | s |
| Phase at STP | gas | solid |
| Electron configuration | 1s1 | [Rn]7s25f11 |
| Oxidation states | [-1, 1] | [2, 3, 4] |
| Electronegativity (Pauling) | 2.2 | 1.3 |
| Electron affinity | 0.75419 eV | -0.3 eV |
| Density | 0.08988 kg/m³ | 8840 kg/m³ |
| Melting point | -259.34 °C | 859.85 °C |
| Boiling point | -252.87 °C | -273.15 °C |
| Discovery year | 1766 | 1952 |