Lawrencium
103
Lr
Gruppe
i/t
Periode
7
Blokk
d
Proton
Elektron
Nøytron
103
103
159
Generelle eigenskapar
Atomnummer
103
Atommasse
[262]
Massetal
262
Kategori
Aktinid
Farge
i/t
Radioaktiv
Ja
Named after Ernest O. Lawrence, inventor of the cyclotron
Krystallstruktur
i/t
Historie
Lawrencium was discovered by Albert Ghiorso, Torbjørn Sikkeland, Almon Larsh and Robert M. Latimer in 1961 at the University of California, Berkeley.
It was produced by the bombardment of californium with boron atoms.
Lawrencium was the last member of the actinide series to be discovered.
It was produced by the bombardment of californium with boron atoms.
Lawrencium was the last member of the actinide series to be discovered.
Elektron per energinivå
2, 8, 18, 32, 32, 8, 3
Elektronkonfigurasjon
[Rn] 5f14 7s2 7p1
Lawrencium is a trivalent ion in aqueous solution
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
- g/cm3
Smeltepunkt
1900 K | 1626,85 °C | 2960,33 °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
CAS-nummer
22537-19-5
PubChem CID-nummer
i/t
Atom eigenskapar
Atomradius
-
Kovalent radius
-
Elektronegativitet
1,3 (Paulings skala)
Ioniseringspotensial
4,9 eV
Molart volum
-
Termisk konduktivitet
0,1 W/cm·K
Oksidasjonstrinn
3
Bruksområde
Lawrencium is used for scientific research purposes only.
Lawrencium is harmful due to its radioactivity
Isotopar
Stabile isotopar
-Ustabile isotopar
251Lr, 252Lr, 253Lr, 254Lr, 255Lr, 256Lr, 257Lr, 258Lr, 259Lr, 260Lr, 261Lr, 262Lr, 263Lr, 264Lr, 265Lr, 266Lr