Atomic NumberAtomic Number of Roentgenium
Atomic Number of Roentgenium is 111.
Chemical symbol for Roentgenium is Rg. Number of protons in Roentgenium is 111. Atomic weight of Roentgenium is 282 u or g/mol. Melting point of Roentgenium is unknown and its the boiling point is unknown.
» Boiling Point » Melting Point » Discovery YearAbout Roentgenium
This is one of the newly discovered elements which was obtained in the mid 1990s in a lab of a German research facility. A group of scientists received it as a result of a nuclear reaction involving bismuth, nickel, and iron. The new element was named roentgenium, after Wilhelm Conrad Röntgen, a German scientists known for creating an X-ray technology. Roentgenium is extremely radioactive and dangerous to the living things on our planet. It does not occur naturally and is used solely in research. So far, only a few atoms of this element have been obtained by the scientists, and the production of this element does not seem to have perspectives.
Properties of Roentgenium Element
| Atomic Number (Z) | 111 |
|---|---|
| Atomic Symbol | Rg |
| Group | 11 |
| Period | 7 |
| Atomic Weight | 282 u |
| Density | 28.7 g/cm3 |
| Melting Point (K) | unknown |
| Melting Point (℃) | unknown |
| Boiling Point (K) | unknown |
| Boiling Point (℃) | unknown |
| Heat Capacity | |
| Abundance | 0 mg/kg |
| State at STP | |
| Occurrence | Synthetic |
| Description | |
| Electronegativity (Pauling) χ | |
| Ionization Energy (eV) | |
| Atomic Radius | |
| Covalent Radius | |
| Valence Electrons | |
| Year of Discovery | 1994 |
| Discoverer | Society for Heavy Ion Research |