Mendelevium

101
Md
Gruppe
n/a
Periode
7
Blok
f
Protons
Electrons
Neutrons
101
101
157
General Properties
Atomnummer
101
Atommasse
[258]
Mass Number
258
Kategori
Actinider
Farve
n/a
Radioactive
Ja
Named after Dmitri Mendeleev, who created the Periodic Table
Krystalstruktur
n/a
History
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.
Elektroner i hver skal
2, 8, 18, 32, 31, 8, 2
Elektronkonfiguration
[Rn] 5f13 7s2
Md
Mendelevium was the first element to be produced one atom at a time
Physical Properties
Tilstandsform
Fast stof
Massefylde
-
Smeltepunkt
1100 K | 826,85 °C | 1520,33 °F
Kogepunkt
-
Smeltevarme
n/a
Fordampningsvarme
n/a
Varmefylde
-
Abundance in Earth's crust
n/a
Abundance in Universe
n/a
The
Billede akkrediteringer: Wikimedia Commons (Serge Lachinov)
The element is named to honor Dmitri Mendeleev, the developer of the periodic table of elements
CAS Number
7440-11-1
PubChem CID Number
n/a
Atomic Properties
Atomradius
-
Kovalent radius
-
Elektronegativitet
1,3 (Paulings skala)
Ionization Potential
6,58 eV
Atomic Volume
-
Varmeledningsevne
0,1 W/cm·K
Oxidationstrin
2, 3
Applications
Mendelevium is used for scientific research purposes only.
Mendelevium is harmful due to its radioactivity
Isotoper
Stable Isotopes
-
Unstable Isotopes
245Md, 246Md, 247Md, 248Md, 249Md, 250Md, 251Md, 252Md, 253Md, 254Md, 255Md, 256Md, 257Md, 258Md, 259Md, 260Md, 261Md, 262Md