Dysprosium
66
Dy
Groep
n.v.t.
Periode
6
Blok
f
Protonen
Elektronen
Neutronen
66
66
97
Algemene Eigenschappen
Atoomnummer
66
Atomair gewicht
162,5
Massa Getal
163
Categorie
Lanthaniden
Kleur
Zilver
Radioactief
Nee
From the Greek word dysprositos, meaning hard to get at
Kristalstructuur
Eenvoudige Hexagonaal
Historie
French chemist Paul Émile Lecoq de Boisbaudran, while working with holmium oxide, separated dysprosium oxide from it in Paris in 1886.
His procedure for isolating the dysprosium involved dissolving dysprosium oxide in acid, then adding ammonia to precipitate the hydroxide.
It was not isolated in pure form until the development of ion exchange techniques in the 1950s.
His procedure for isolating the dysprosium involved dissolving dysprosium oxide in acid, then adding ammonia to precipitate the hydroxide.
It was not isolated in pure form until the development of ion exchange techniques in the 1950s.
Eletronen per schil
2, 8, 18, 28, 8, 2
Electronconfiguratie
[Xe] 4f10 6s2
Naturally occurring dysprosium is composed of 7 isotopes
Fysieke Eigenschappen
Fase
Vast
Dichtheid
8,55 g/cm3
Smeltpunt
1680,15 K | 1407 °C | 2564,6 °F
Kookpunt
2840,15 K | 2567 °C | 4652,6 °F
Fusiewarmte
11,1 kJ/mol
Verdampingswarmte
280 kJ/mol
Specifieke Warmtecapaciteit
0,17 J/g·K
Overvloedig aanwezig in de aardkorst
0,00062%
Overvloedig aanwezig in het universum
2×10-7%
CAS-nummer
7429-91-6
PubChem CID nummer
23912
Atoomeigenschappen
Atoomstraal
178 pm
Covalentiestraal
192 pm
Electronegativiteit
1,22 (Pauling schaal)
Ionisatiepotentiaal
5,9389 eV
Atoomvolume
19,0 cm3/mol
Thermische geleiding
0,107 W/cm·K
Oxidatietoestanden
2, 3
Toepassingen
Dysprosium oxide-nickel cermets are used in neutron-absorbing control rods in nuclear reactors.
Dysprosium is used in data storage applications such as compact discs and hard discs.
It is also used in dosimeters for measuring ionizing radiation.
Dysprosium iodide and dysprosium bromide are used in high intensity metal-halide lamps.
Dysprosium is used in data storage applications such as compact discs and hard discs.
It is also used in dosimeters for measuring ionizing radiation.
Dysprosium iodide and dysprosium bromide are used in high intensity metal-halide lamps.
Dysprosium is considered to be moderately toxic
Isotopen
Stabiele isotopen
156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy, 164DyInstabiele isotopen
138Dy, 139Dy, 140Dy, 141Dy, 142Dy, 143Dy, 144Dy, 145Dy, 146Dy, 147Dy, 148Dy, 149Dy, 150Dy, 151Dy, 152Dy, 153Dy, 154Dy, 155Dy, 157Dy, 159Dy, 165Dy, 166Dy, 167Dy, 168Dy, 169Dy, 170Dy, 171Dy, 172Dy, 173Dy