Disprosium

66
Dy
Kumpulan
Tiada
Kala
6
Blok
f
Proton
Elektron
Neutron
66
66
97
Ciri-Ciri Am
Nombor atom
66
Berat atom
162.5
Nombor jisim
163
Kategori
Lantanid
Warna
Perak
Radioaktif
Tidak
From the Greek word dysprositos, meaning hard to get at
Struktur hablur
Hexagonal Ringkas
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 28, 8, 2
Konfigurasi elektron
[Xe] 4f10 6s2
Dy
Naturally occurring dysprosium is composed of 7 isotopes
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
8.55 g/cm3
Takat lebur
1680.15 K | 1407 °C | 2564.6 °F
Takat didih
2840.15 K | 2567 °C | 4652.6 °F
Haba pelakuran
11.1 kJ/mol
Haba pengewapan
280 kJ/mol
Muatan haba molar
0.17 J/g·K
Banyak pada kerak bumi
0.00062%
Banyak pada alam semesta
2×10-7%
Ultrapure
Kredit imej: Images-of-elements
Ultrapure dysprosium dendrites
Nombor CAS
7429-91-6
PubChem CID Number
23912
Ciri-Ciri Atom
Jejari atom
178 pm
Jejari kovalen
192 pm
Keelektronegatifan
1.22 (Skala Pauling)
Kebolehan mengion
5.9389 eV
Isipadu atom
19.0 cm3/mol
Daya pengaliran terma
0.107 W/cm·K
Keadaan pengoksidaan
2, 3
Aplikasi
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 considered to be moderately toxic
Isotop
Isotop stabil
156Dy, 158Dy, 160Dy, 161Dy, 162Dy, 163Dy, 164Dy
Isotop tidak stabil
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