95 Am
Actinide
Americium
Used in smoke detectors.
Properties of Americium
- Atomic number (Z)
- 95
- Symbol
- Am
- Atomic mass
- 243 g/mol
- Category
- Actinide
- Group
- 3
- Period
- 7
- Electron configuration
- [Rn] 5f⁷ 7s²
- Electronegativity (Pauling)
- 1.13
- Atomic radius
- 175 pm
- First ionization energy
- 578 kJ/mol
- Melting point
- 1449 K (1175.8 °C)
- Boiling point
- 2880 K (2606.8 °C)
- Density
- 13.69 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1944
Frequently asked questions
What is Americium?
Americium (Am) is an actinide, element number 95 on the periodic table. Used in smoke detectors.
What is the atomic number and atomic mass of Americium?
Americium has atomic number 95 and an atomic mass of about 243 g/mol.
What is the electron configuration of Americium?
The electron configuration of Americium is [Rn] 5f⁷ 7s².
Where is Americium on the periodic table?
Americium sits in group 3, period 7, and is classified as a actinide.