101 Md
Actinide
Mendelevium
Named after Mendeleev.
Properties of Mendelevium
- Atomic number (Z)
- 101
- Symbol
- Md
- Atomic mass
- 258 g/mol
- Category
- Actinide
- Group
- 3
- Period
- 7
- Electron configuration
- [Rn] 5f¹³ 7s²
- Electronegativity (Pauling)
- 1.3
- Atomic radius
- —
- First ionization energy
- 635 kJ/mol
- Melting point
- 1100 K (826.9 °C)
- Boiling point
- —
- Density
- —
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1955
Frequently asked questions
What is Mendelevium?
Mendelevium (Md) is an actinide, element number 101 on the periodic table. Named after Mendeleev.
What is the atomic number and atomic mass of Mendelevium?
Mendelevium has atomic number 101 and an atomic mass of about 258 g/mol.
What is the electron configuration of Mendelevium?
The electron configuration of Mendelevium is [Rn] 5f¹³ 7s².
Where is Mendelevium on the periodic table?
Mendelevium sits in group 3, period 7, and is classified as a actinide.