Fermium (Fm) — Actinide. Atomic number 100.
Radioactive metallic solid
- Atomic number: 100
- Symbol: Fm
- Atomic mass: [257] u
- Category: Actinide
- State: Solid
- Melting point: 1526.85 °C / 1800 K
- Density: 9.7 g/cm³ (20°C)
- Electron configuration: [Rn] 5f12 7s2
- Oxidation states: +2, +3
- Electronegativity: 1.3
- Discovered by: Albert Ghiorso and team (1952)
Common uses: Scientific research only
Biological role: No biological role.
Frequently Asked Questions about Fermium
What is the atomic number of fermium?
Fermium has an atomic number of 100, meaning each atom contains 100 protons in its nucleus.
What is the atomic mass of fermium?
The standard atomic weight of fermium is [257] u (unified atomic mass units).
What category does fermium belong to?
Fermium is classified as a actinide.
What is the state of fermium at room temperature?
Fermium is a solid at 20 °C (68 °F).
What is the melting point of fermium?
The melting point of fermium is 1526.85 °C / 1800 K.
What is the density of fermium?
The density of fermium is 9.7 g/cm³ (20°C).
What is the electronegativity of fermium?
Fermium has a Pauling electronegativity of 1.3.
What is the electron configuration of fermium?
The electron configuration of fermium is [Rn] 5f12 7s2.
What are the common oxidation states of fermium?
Fermium commonly exhibits the following oxidation states: +2, +3.
When was fermium discovered?
Fermium was discovered in 1952 by Albert Ghiorso and team.
Is fermium radioactive?
Fermium is a synthetic radioactive element that does not occur naturally and must be produced in a laboratory.
What is the biological role of fermium?
No biological role.
What are the common uses of fermium?
Fermium is used for: Scientific research only.
