Telurium

52
Te
Kumpulan
16
Kala
5
Blok
p
Proton
Elektron
Neutron
52
52
76
Ciri-Ciri Am
Nombor atom
52
Berat atom
127.6
Nombor jisim
128
Kategori
Metaloid
Warna
Perak
Radioaktif
Tidak
From the Latin word tellus, earth
Struktur hablur
Trigonal Ringkas
Sejarah
Tellurium was discovered in Transylvania in 1782 by Franz-Joseph Müller von Reichenstein in a mineral containing tellurium and gold.

In 1789, another Hungarian scientist, Pál Kitaibel, also discovered the element independently in an ore from Deutsch-Pilsen which had been regarded as argentiferous molybdenite.

In 1798, it was named by Martin Heinrich Klaproth who earlier isolated it from the mineral calaverite.
Bilangan elektron per petala
2, 8, 18, 18, 6
Konfigurasi elektron
[Kr] 4d10 5s2 5p4
Te
In air, tellurium burns with a greenish-blue flames, forming the dioxide
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
6.232 g/cm3
Takat lebur
722.66 K | 449.51 °C | 841.12 °F
Takat didih
1261.15 K | 988 °C | 1810.4 °F
Haba pelakuran
17.5 kJ/mol
Haba pengewapan
48 kJ/mol
Muatan haba molar
0.202 J/g·K
Banyak pada kerak bumi
9.9×10-8%
Banyak pada alam semesta
9×10-7%
Metallic
Kredit imej: Images-of-elements
Metallic tellurium
Nombor CAS
13494-80-9
PubChem CID Number
6327182
Ciri-Ciri Atom
Jejari atom
140 pm
Jejari kovalen
138 pm
Keelektronegatifan
2.1 (Skala Pauling)
Kebolehan mengion
9.0096 eV
Isipadu atom
20.5 cm3/mol
Daya pengaliran terma
0.0235 W/cm·K
Keadaan pengoksidaan
-2, 2, 4, 5, 6
Aplikasi
The primary use of tellurium is in alloys, foremost in steel and copper to improve machinability.

Tellurium is used as a basic ingredient in blasting caps, and is added to cast iron for chill control.

It is used in vulcanizing rubber and in catalysts for petroleum cracking.

Tellurium is used as a coloring agent in ceramics.
Tellurium and tellurium compounds are considered to be mildly toxic
Isotop
Isotop stabil
120Te, 122Te, 124Te, 125Te, 126Te
Isotop tidak stabil
105Te, 106Te, 107Te, 108Te, 109Te, 110Te, 111Te, 112Te, 113Te, 114Te, 115Te, 116Te, 117Te, 118Te, 119Te, 121Te, 123Te, 127Te, 128Te, 129Te, 130Te, 131Te, 132Te, 133Te, 134Te, 135Te, 136Te, 137Te, 138Te, 139Te, 140Te, 141Te, 142Te