In detail

Mendelevium (Md) - Properties


Atomic mass, symbol and atomic number

mendelevium is an artificially created element with the element symbol Md and atomic number 101. In the periodic table it belongs to the actinoids with an atomic mass of 258 u. The chemical element discovered in 1955 is radioactive and is in a solid state of aggregation at room temperature.

Characteristics: Mendelevium (English Mendelevium)

General
Chemical element:mendelevium
Symbol:Md
Atomic number:101
Group:actinides
Period:7
Block:f-block
Series:actinides
Appearance:unknown
explorers:Lawrence Berkeley National Laboratory
Year of discovery:1955
Atomic properties
Atomic mass:258 u
Atomic radius:unknown
Covalent radius:unknown
Van der Waals radius:unknown
Electron configuration:Rn 5f13 7s2
ionization:635 kJ / mol
Physical Properties
Physical state:firmly
Density:unknown
Crystal structure:unknown
Magnetism:unknown
molar volume:unknown
Mohs hardness:unknown
Melting point:unknown
Boiling point:unknown
Heat of fusion:unknown
Heat of vaporization:unknown
Thermal conductivity:unknown
Chemical properties
electronegativity:1,3

Did you know that ...

  • Mendelevium was named after the chemist Dmitry Ivanovich Mendeleev, who himself is not the discoverer of the chemical element?
  • Mendelevium was first synthesized at the Lawrence Berkeley National Laboratory in California?
  • Mendelevium plays no dangerous role despite its radioactivity, because it does not occur naturally on Earth?