Terbium

65
Tb
Kumpulan
Tiada
Kala
6
Blok
f
Proton
Elektron
Neutron
65
65
94
Ciri-Ciri Am
Nombor atom
65
Berat atom
158.92535
Nombor jisim
159
Kategori
Lantanid
Warna
Perak
Radioaktif
Tidak
Terbium was named after Ytterby, a town in Sweden
Struktur hablur
Hexagonal Ringkas
Sejarah
Terbium was discovered in 1843 by Swedish chemist Carl Gustaf Mosander, who detected it as an impurity in yttria.

Using ammonium hydroxide he precipitated fractions of different basicity from yttria.

In these fractions he found that the fraction that was essentially colorless in solution, but gave a brown-tinged oxide was terbium.
Bilangan elektron per petala
2, 8, 18, 27, 8, 2
Konfigurasi elektron
[Xe] 4f9 6s2
Tb
Terbium is soft enough to be cut with a knife
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
8.229 g/cm3
Takat lebur
1629.15 K | 1356 °C | 2472.8 °F
Takat didih
3503.15 K | 3230 °C | 5846 °F
Haba pelakuran
10.8 kJ/mol
Haba pengewapan
295 kJ/mol
Muatan haba molar
0.182 J/g·K
Banyak pada kerak bumi
0.000093%
Banyak pada alam semesta
5×10-8%
Pure
Kredit imej: Images-of-elements
Pure terbium
Nombor CAS
7440-27-9
PubChem CID Number
23958
Ciri-Ciri Atom
Jejari atom
177 pm
Jejari kovalen
194 pm
Keelektronegatifan
1.2 (Skala Pauling)
Kebolehan mengion
5.8638 eV
Isipadu atom
19.20 cm3/mol
Daya pengaliran terma
0.111 W/cm·K
Keadaan pengoksidaan
1, 3, 4
Aplikasi
Terbium is used in alloys and in the production of electronic devices.

It is also used as a dopant for materials in solid-state devices and optical fibers.

Terbium oxide is in fluorescent lamps and TV tubes.

The brilliant fluorescence allows terbium to be used as a probe in biochemistry.
Terbium is considered to be moderately toxic
Isotop
Isotop stabil
159Tb
Isotop tidak stabil
136Tb, 137Tb, 138Tb, 139Tb, 140Tb, 141Tb, 142Tb, 143Tb, 144Tb, 145Tb, 146Tb, 147Tb, 148Tb, 149Tb, 150Tb, 151Tb, 152Tb, 153Tb, 154Tb, 155Tb, 156Tb, 157Tb, 158Tb, 160Tb, 161Tb, 162Tb, 163Tb, 164Tb, 165Tb, 166Tb, 167Tb, 168Tb, 169Tb, 170Tb, 171Tb