Rg
Roentgenium Symbol (Rg)
Roentgenium is element 111 of the periodic table. Copy its symbol Rg and see its atomic weight, electron configuration and physical properties.
What does Rg mean?
Rg is the chemical symbol for roentgenium, element number 111 in the periodic table. Roentgenium is a transition metal in group 11, period 7. It is expected to be a solid at room temperature and was discovered in 1994.
Codes and properties
| Chemical symbol | Rg |
|---|---|
| Atomic number (Z) | 111 |
| Mass number (no standard atomic weight) | [282] |
| Group / period | 11 / 7 |
| Element category | transition metal |
| Electron configuration | [Rn]7s² 5f¹⁴ 6d⁹ (predicted) |
| State at 20 °C | Expected to be a Solid |
| Oxidation states | 5, 3, 1, -1 |
| Discovered | 1994 |
How to type Rg
- Plain text: type
Rg— element symbols are ordinary Latin letters, with the first letter capitalised and the second lowercase. - Subscripts in formulas: use Unicode subscript digits (₀₁₂₃₄₅₆₇₈₉) for formulas such as H₂O — copy them from the chemistry keyboard.
- LaTeX: write
\mathrm{Rg}in math mode, or use the mhchem package:\ce{Rg}. - HTML:
Rg; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for roentgenium?
The chemical symbol for roentgenium is Rg.
What is the atomic number of roentgenium?
Roentgenium has atomic number 111, meaning each atom has 111 protons.
What is the electron configuration of roentgenium?
The ground-state electron configuration of roentgenium is [Rn]7s² 5f¹⁴ 6d⁹ (predicted).
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Reference: Roentgenium on PubChem (NIH)