Mendelevium
101
Md
Gruppe
n/a
Periode
7
Block
f
Protonen
Elektronen
Neutronen
101
101
157
Generelle Eigenschaften
Ordnungszahl
101
Atommasse
[258]
Massenzahl
258
Kategorie
Actinoide
Farbe
n/a
Radioaktiv
Ja
Named after Dmitri Mendeleev, who created the Periodic Table
Kristallstruktur
n/a
Geschichte
Mendelevium was discovered by Albert Ghiorso, Glenn T. Seaborg, Gregory R. Choppin, Bernard G. Harvey and Stanley G. Thompson in 1955 at the University of California, Berkeley.
It was produced by the bombardment of einsteinium with helium.
Mendelevium was identified by chemical analysis in an ion exchange experiment.
It was produced by the bombardment of einsteinium with helium.
Mendelevium was identified by chemical analysis in an ion exchange experiment.
Elektronen pro Schale
2, 8, 18, 32, 31, 8, 2
Elektronenkonfiguration
[Rn] 5f13 7s2
Mendelevium was the first element to be produced one atom at a time
Physikalische Eigenschaften
Aggregatzustand
Fest
Dichte
-
Schmelzpunkt
1100 K | 826,85 °C | 1520,33 °F
Siedepunkt
-
Schmelzwärme
n/a
Verdampfungswärme
n/a
Spezifische Wärmekapazität
-
Häufigkeit in der Erdkruste
n/a
Häufigkeit im Universum
n/a
Danksagungen für Bilder: Wikimedia Commons (Serge Lachinov)
The element is named to honor Dmitri Mendeleev, the developer of the periodic table of elements
CAS-Nummer
7440-11-1
PubChem CID-Nummer
n/a
Atomeigenschaften
Atomradius
-
Kovalenter Radius
-
Elektronegativität
1,3 (Pauling-Skala)
Ionisierungsenergie
6,58 eV
Molares Volumen
-
Wärmeleitfähigkeit
0,1 W/cm·K
Oxidationszustände
2, 3
Anwendung
Mendelevium is used for scientific research purposes only.
Mendelevium is harmful due to its radioactivity
Isotope
Stabile Isotope
-Instabile Isotope
245Md, 246Md, 247Md, 248Md, 249Md, 250Md, 251Md, 252Md, 253Md, 254Md, 255Md, 256Md, 257Md, 258Md, 259Md, 260Md, 261Md, 262Md