Lawrencium

103
Lr
Gruppe
n/a
Periode
7
Blok
d
Protons
Electrons
Neutrons
103
103
159
General Properties
Atomnummer
103
Atommasse
[262]
Mass Number
262
Kategori
Actinider
Farve
n/a
Radioactive
Ja
Named after Ernest O. Lawrence, inventor of the cyclotron
Krystalstruktur
n/a
History
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.
Elektroner i hver skal
2, 8, 18, 32, 32, 8, 3
Elektronkonfiguration
[Rn] 5f14 7s2 7p1
Lr
Lawrencium is a trivalent ion in aqueous solution
Physical Properties
Tilstandsform
Fast stof
Massefylde
-
Smeltepunkt
1900 K | 1626,85 °C | 2960,33 °F
Kogepunkt
-
Smeltevarme
n/a
Fordampningsvarme
n/a
Varmefylde
-
Abundance in Earth's crust
n/a
Abundance in Universe
n/a
Illustration
Billede akkrediteringer: Images-of-elements
Illustration of lawrencium
CAS Number
22537-19-5
PubChem CID Number
n/a
Atomic Properties
Atomradius
-
Kovalent radius
-
Elektronegativitet
1,3 (Paulings skala)
Ionization Potential
4,9 eV
Atomic Volume
-
Varmeledningsevne
0,1 W/cm·K
Oxidationstrin
3
Applications
Lawrencium is used for scientific research purposes only.
Lawrencium is harmful due to its radioactivity
Isotoper
Stable Isotopes
-
Unstable Isotopes
251Lr, 252Lr, 253Lr, 254Lr, 255Lr, 256Lr, 257Lr, 258Lr, 259Lr, 260Lr, 261Lr, 262Lr, 263Lr, 264Lr, 265Lr, 266Lr