Fm
Fermium Symbol (Fm)
Fermium is element 100 of the periodic table. Copy its symbol Fm and see its atomic weight, electron configuration and physical properties.
What does Fm mean?
Fm is the chemical symbol for fermium, element number 100 in the periodic table. Fermium is an actinide in the f-block, period 7. It is a solid at room temperature and was discovered in 1952.
Codes and properties
| Chemical symbol | Fm |
|---|---|
| Atomic number (Z) | 100 |
| Mass number (no standard atomic weight) | [257] |
| Group / period | f-block / 7 |
| Element category | actinide |
| Electron configuration | [Rn] 5f¹² 7s² |
| State at 20 °C | Solid |
| Oxidation states | +3 |
| Electronegativity (Pauling) | 1.3 |
| Melting point | 1800 K (1526.85 °C) |
| Discovered | 1952 |
How to type Fm
- Plain text: type
Fm— 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{Fm}in math mode, or use the mhchem package:\ce{Fm}. - HTML:
Fm; for subscripts use<sub>, e.g.H<sub>2</sub>O.
Frequently asked questions
What is the chemical symbol for fermium?
The chemical symbol for fermium is Fm.
What is the atomic number of fermium?
Fermium has atomic number 100, meaning each atom has 100 protons.
What is the electron configuration of fermium?
The ground-state electron configuration of fermium is [Rn] 5f¹² 7s².
Related symbols
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Reference: Fermium on PubChem (NIH)