Protaktinio
Protaktinio (Pa) is a chemical element belonging to the category Inner transition metal, with atomic number 91 and atomic mass 231.0360 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Identity
- Name: Protaktinio
- Symbol: Pa
- Atomic number: 91
- Atomic mass: 231.0360 u
Position in the periodic table
- Group: 3
- Period: 7
- Category: Inner transition metal
Physico-chemical properties
- Standard state: Solid
- Melting point: About 1572°C
- Density: About 15.37 g/cm³
- Electron configuration: [Rn] 5f² 6d¹ 7s²
Scientific description
Protaktinio is a chemical element with symbol Pa and atomic number 91. It belongs to the category of Inner transition metal and occupies group 3 and period 7. Its standard atomic mass is 231.0360 u.
KODO: Q1