Mendelevium
101
Md
Gruppe
n/a
Periode
7
Blok
f
Protoner
Elektroner
Neutroner
101
101
157
Generelle Egenskaber
Atomnummer
101
Atommasse
[258]
Masseantal
258
Kategori
Actinider
Farve
n/a
Radioaktiv
Ja
Named after Dmitri Mendeleev, who created the Periodic Table
Krystalstruktur
n/a
Historie
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.
Elektroner i hver skal
2, 8, 18, 32, 31, 8, 2
Elektronkonfiguration
[Rn] 5f13 7s2
Mendelevium was the first element to be produced one atom at a time
Fysiske Egenskaber
Tilstandsform
Fast stof
Massefylde
-
Smeltepunkt
1100 K | 826,85 °C | 1520,33 °F
Kogepunkt
-
Smeltevarme
n/a
Fordampningsvarme
n/a
Varmefylde
-
Forekomst i jordskorpen
n/a
Forekomst i universet
n/a
Billede akkrediteringer: 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
Atomare egenskaber
Atomradius
-
Kovalent radius
-
Elektronegativitet
1,3 (Paulings skala)
Ioniseringspotentiale
6,58 eV
Atomvolumen
-
Varmeledningsevne
0,1 W/cm·K
Oxidationstrin
2, 3
Anvendelser
Mendelevium is used for scientific research purposes only.
Mendelevium is harmful due to its radioactivity
Isotoper
Stabile isotoper
-Ustabile isotoper
245Md, 246Md, 247Md, 248Md, 249Md, 250Md, 251Md, 252Md, 253Md, 254Md, 255Md, 256Md, 257Md, 258Md, 259Md, 260Md, 261Md, 262Md