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)
|explorers:||Lawrence Berkeley National Laboratory|
|Year of discovery:||1955|
|Atomic mass:||258 u|
|Van der Waals radius:||unknown|
|Electron configuration:||Rn 5f13 7s2|
|ionization:||635 kJ / mol|
|Heat of fusion:||unknown|
|Heat of vaporization:||unknown|
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?