101 Md 258
Mendelevium
actinide
Properties
- Atomic number
- 101
- Atomic mass
- 258 u
- Category
- actinide
- Group
- f-block
- Period
- 7
- Block
- f-block
- State (room temp)
- Solid
- Outer-shell electrons
- 2
- Electronegativity
- 1.3 (Pauling)
- Density
- —
- Melting point
- 826.85 °C
- Boiling point
- —
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 7s² 5f¹³
Noble-gas shorthand: [Rn] 5f¹³ 7s²
Electrons per shell: 2, 8, 18, 32, 31, 8, 2 — that's 2 in the outermost shell.
About Mendelevium
Mendelevium is a synthetic element with chemical symbol Md (formerly Mv) and atomic number 101. A metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities through neutron bombardment of lighter elements. It is the antepenultimate actinide and the ninth transuranic element.
- Discovered by Lawrence Berkeley National Laboratory
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.