Dysprosium
66
Dy
Groep
n/a
Periode
6
Blok
f
Protrone
Elektrone
Neutrone
66
66
97
Algemene Eienskappe
Atoom Nommer
66
Atoommassa
162,5
Massa Nommer
163
Kategorie
Lantaniede
Kleur
Silver
Radioaktief
Nee
From the Greek word dysprositos, meaning hard to get at
Kristalstruktuur
Eenvoudige seshoekige
Geskiendenis
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.
Elektrone per skil
2, 8, 18, 28, 8, 2
Elektronkonfigurasie
[Xe] 4f10 6s2
Naturally occurring dysprosium is composed of 7 isotopes
Fisiese Eienskappe
Fase
Soliede
Digtheid
8,55 g/cm3
Smeltpunt
1680,15 K | 1407 °C | 2564,6 °F
Kookpunt
2840,15 K | 2567 °C | 4652,6 °F
Heat of Fusion
11,1 kJ/mol
Heat of Vaporization
280 kJ/mol
Spesifieke Hitte Kapasiteit
0,17 J/g·K
Oorvloed in die aardkors
0,00062%
Oorvloed in die heelal
2×10-7%
CAS Nommer
7429-91-6
PubChem CID Nommer
23912
Atomiese Eienskappe
Atoom radius
178 pm
Kovalente Radius
192 pm
Elektronegatiewiteit
1,22 (Pauling scale)
Ionisasie potensiaal
5,9389 eV
Atoom volume
19,0 cm3/mol
Termiese geleidingsvermoë
0,107 W/cm·K
Oksidasiestate
2, 3
Toepassings
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
Isotope
Stabiele Isotope
156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy, 164DyOnstabiele Isotope
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