27 Co
Transition metal
Cobalt
Magnetic; in lithium-ion batteries.
Properties of Cobalt
- Atomic number (Z)
- 27
- Symbol
- Co
- Atomic mass
- 58.933 g/mol
- Category
- Transition metal
- Group
- 9
- Period
- 4
- Electron configuration
- [Ar] 3d⁷ 4s²
- Electronegativity (Pauling)
- 1.88
- Atomic radius
- 152 pm
- First ionization energy
- 760 kJ/mol
- Melting point
- 1768 K (1494.8 °C)
- Boiling point
- 3200 K (2926.8 °C)
- Density
- 8.86 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1735
Frequently asked questions
What is Cobalt?
Cobalt (Co) is a transition metal, element number 27 on the periodic table. Magnetic; in lithium-ion batteries.
What is the atomic number and atomic mass of Cobalt?
Cobalt has atomic number 27 and an atomic mass of about 58.933 g/mol.
What is the electron configuration of Cobalt?
The electron configuration of Cobalt is [Ar] 3d⁷ 4s².
Where is Cobalt on the periodic table?
Cobalt sits in group 9, period 4, and is classified as a transition metal.