Mendelevium
101
Md
Gruppe
i/t
Periode
7
Blokk
f
Proton
Elektron
Nøytron
101
101
157
Generelle eigenskapar
Atomnummer
101
Atommasse
[258]
Massetal
258
Kategori
Aktinid
Farge
i/t
Radioaktiv
Ja
Named after Dmitri Mendeleev, who created the Periodic Table
Krystallstruktur
i/t
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.
Elektron per energinivå
2, 8, 18, 32, 31, 8, 2
Elektronkonfigurasjon
[Rn] 5f13 7s2
Mendelevium was the first element to be produced one atom at a time
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
- g/cm3
Smeltepunkt
1100 K | 826,85 °C | 1520,33 °F
Kokepunkt
-
Smeltevarme
i/t kJ/mol
Fordampingsvarme
i/t kJ/mol
Spesifikk varmekapasitet
- J/g·K
Førekomst i jordskorpa
i/t
Førekomst i universet
i/t
Biletkreditering: 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
i/t
Atom eigenskapar
Atomradius
-
Kovalent radius
-
Elektronegativitet
1,3 (Paulings skala)
Ioniseringspotensial
6,58 eV
Molart volum
-
Termisk konduktivitet
0,1 W/cm·K
Oksidasjonstrinn
2, 3
Bruksområde
Mendelevium is used for scientific research purposes only.
Mendelevium is harmful due to its radioactivity
Isotopar
Stabile isotopar
-Ustabile isotopar
245Md, 246Md, 247Md, 248Md, 249Md, 250Md, 251Md, 252Md, 253Md, 254Md, 255Md, 256Md, 257Md, 258Md, 259Md, 260Md, 261Md, 262Md