Neon vs Meitnerium
| Property | Ne Neon | Mt Meitnerium |
|---|---|---|
| Atomic number | 10 | 109 |
| Symbol | Ne | Mt |
| Name | Neon | Meitnerium |
| Category | noble-gas | transition-metal |
| Standard Atomic Weight | 20.1797 u | 278 u |
| Period | 2 | 7 |
| Group | 18 | 9 |
| Block | p | s |
| Phase at STP | gas | N/A |
| Electron configuration | [He]2s22p6 | [Rn]7s25f146d7(calculated) |
| Oxidation states | [0] | [1, 3, 4, 6, 8, 9] |
| Electronegativity (Pauling) | N/A | N/A |
| Electron affinity | -1.2 eV | 1.7 eV |
| Density | 0.8999 kg/m³ | 3.740000e+4 kg/m³ |
| Melting point | -248.59 °C | -273.15 °C |
| Boiling point | -246.05 °C | -273.15 °C |
| Discovery year | 1898 | 1982 |