Americium (Am) — Actinide. Atomic number 95.
Silvery radioactive metal
- Atomic number: 95
- Symbol: Am
- Atomic mass: [243] u
- Category: Actinide
- State: Solid
- Melting point: 1175.85 °C / 1449 K
- Boiling point: 2606.85 °C / 2880 K
- Density: 13.67 g/cm³ (20°C)
- Electron configuration: [Rn] 5f7 7s2
- Oxidation states: +2, +3, +4, +5, +6
- Electronegativity: 1.3
- Discovered by: Glenn Seaborg and team (1944)
Common uses: Smoke detectors, Research
Biological role: No biological role.
Frequently Asked Questions about Americium
What is the atomic number of americium?
Americium has an atomic number of 95, meaning each atom contains 95 protons in its nucleus.
What is the atomic mass of americium?
The standard atomic weight of americium is [243] u (unified atomic mass units).
What category does americium belong to?
Americium is classified as a actinide.
What is the state of americium at room temperature?
Americium is a solid at 20 °C (68 °F).
What is the melting point of americium?
The melting point of americium is 1175.85 °C / 1449 K.
What is the boiling point of americium?
The boiling point of americium is 2606.85 °C / 2880 K.
What is the density of americium?
The density of americium is 13.67 g/cm³ (20°C).
What is the electronegativity of americium?
Americium has a Pauling electronegativity of 1.3.
What is the electron configuration of americium?
The electron configuration of americium is [Rn] 5f7 7s2.
What are the common oxidation states of americium?
Americium commonly exhibits the following oxidation states: +2, +3, +4, +5, +6.
When was americium discovered?
Americium was discovered in 1944 by Glenn Seaborg and team.
Is americium radioactive?
Americium is a synthetic radioactive element that does not occur naturally and must be produced in a laboratory.
What is the biological role of americium?
No biological role.
What are the common uses of americium?
Americium is used for: Smoke detectors; Research.
