Americio (Am) is a chemical element belonging to the category Inner transition metal (actinide), with atomic number 95 and atomic mass 243.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Identity
- Name: Americio
- Symbol: Am
- Atomic number: 95
- Atomic mass: 243.0000 u
Position in the periodic table
- Group: 3
- Period: 7
- Category: Inner transition metal
Physico-chemical properties
- Standard state: Solid
- Melting point: About 1176°C
- Density: About 12 g/cm³
- Electron configuration: [Rn] 5f⁷ 7s²
Scientific description
Americio is a chemical element with symbol Am and atomic number 95. It belongs to the inner transition metals of the actinide series and occupies group 3 and period 7 in the periodic table. Its standard atomic mass is 243.0000 u.