Cobalt (Co)

Sifat-Sifat Umum

Simbol Co
Nomor Atom 27
Berat atom 58.933195
Kelompok
9 (keluarga kobal)
VIIIA (IUPAC), VIII (CAS)
Solid, Ferromagnetic, Conductor, Transition Metal, Metal, Stable, Natural
Periode 4
Blok d

Media

Kepadatan 8.9 g/cm3
Isipadu Atom 6.7 cm3/mole
Radius Atom 1.25 angstroms
Radius Kovalen 126 pm
Crust Abundance 0.003%
Crystal Structure Hexagonal
Color Gray

Energi

Elektronegativitas 1.9 (Skala Pauling)
Afinitas Elektron 63.7 kJ/mol
Ionisasi Energi Pertama 761 kJ/mol
ke-2 Ionization Energy 1648 kJ/mol
ke-3 Ionization Energy 3232 kJ/mol
ke-4 Ionization Energy 4950 kJ/mol
ke-5 Ionization Energy 7670 kJ/mol
ke-6 Ionization Energy 9840 kJ/mol
ke-7 Ionization Energy 12440 kJ/mol
ke-8 Ionization Energy 15230 kJ/mol
ke-9 Ionization Energy 17959 kJ/mol
ke-10 Ionization Energy 26570 kJ/mol
ke-11 Ionization Energy 29400 kJ/mol
ke-12 Ionization Energy 32400 kJ/mol
ke-13 Ionization Energy 36600 kJ/mol
ke-14 Ionization Energy 39700 kJ/mol
ke-15 Ionization Energy 42800 kJ/mol
ke-16 Ionization Energy 49396 kJ/mol
ke-17 Ionization Energy 52737 kJ/mol
ke-18 Ionization Energy 134810 kJ/mol
ke-19 Ionization Energy 145170 kJ/mol
ke-20 Ionization Energy 154700 kJ/mol
ke-21 Ionization Energy 167400 kJ/mol
ke-22 Ionization Energy 178100 kJ/mol
ke-23 Ionization Energy 189300 kJ/mol
ke-24 Ionization Energy 204500 kJ/mol
ke-25 Ionization Energy 214100 kJ/mol
ke-26 Ionization Energy 920870 kJ/mol
ke-27 Ionization Energy 966023 kJ/mol
Kapasitas Panas Spesifik 0.421 J g−1 K−1
Konduktivitas Termal 100.0 W·m−1·K−1

Elektron & Oksidasi

Kondisi Oksidisasi +2,3
Elektron Setiap Kelopak 2 8 15 2
Konfigurasi Elektron [Ar] 3d7 4s2
1s2 2s2 2p6 3s2 3p6 3d7 4s2
Diagram Orbital
1s
↿⇂
2s
↿⇂
2p
↿⇂
↿⇂
↿⇂
3s
↿⇂
3p
↿⇂
↿⇂
↿⇂
3d
↿⇂
↿⇂
↿ 
↿ 
↿ 
4s
↿⇂
4p
 
 
 
4d
 
 
 
 
 
4f
 
 
 
 
 
 
 

Nuclear

Radioaktif Tidak

Media

Keplanetan Model Bohr Cobalt (Co)
Description
Hard, ductile, lustrous bluish-gray metal. Exists in the earth's curst in cocentrations of about 25 ppm. It has remarkable magnetic properties.
Uses
Used in many hard alloys; for magnets, ceramics and special glasses. Remains hard up to 982°C. Radioactive cobalt-60 is used in cancer therapy.
Sources
Occurs in compounds with arsenic, oxygen and sulfur as in cobaltine (CoAsS) and linneite (Co3S4). Pure cobalt is obtained as a byproduct of refining nickel, copper and iron.
Pronounciation (English)
KO-bolt

Terjemahan

Afrikaans Kobalt
Aragonese Cobalto
العربية كوبلت
Armãneashte Cobaltu
asturianu Cobaltu
azərbaycan Kobalt
български Кобалт
বাংলা কোবাল্ট
brezhoneg Kobalt
bosanski Kobalt
Byelorussian Кобальт
Cebuano Kobalto
čeština Kobalt, Dasík†
Chuvash Кобальт
Cymraeg Cobalt
dansk Cobalt, Kobolt
Deutsch Kobalt
Ελληνικά Κοβαλτιο
English Cobalt
esperanto Kobalto
español Cobalto
eesti Koobalt
euskara Kobaltoa
فارسی کبالت
suomi Koboltti
føroyskt Kobolt
français Cobalt
furlan Cobalt
Frysk Kobalt
Gaeilge Cóbalt
Gàidhlig Còbalt
galego Cobalto
ગુજરાતી કોબાલ્ટનો
Gaelg Cobalt
Hakka Chinese Kû (鈷)
עברית קובלט
हिन्दी कोबाल्ट
hrvatski Kobalt
magyar Kobalt
հայերեն Կոբալտ
Indonesia Kobalt
íslenska Kóbalt
italiano Cobalto
日本語 コバルト
ქართული კობალტი
کٲشُر Kabalt
қазақ тілі Кобальт
한국어 코발트
kurdî Kobalt
Komi Кобальт
kernewek Cobolt
кыргызча Кобальт
Latin Cobaltum
Lëtzebuergesch Kobalt
Lombard Cubaalt
lingála Kobalti
lietuvių Kobaltas
latviešu Kobalts
Mari Кобальт
Māori Cobalt
македонски Кобалт
മലയാളം കൊബാള്‍ട്ട്
монгол Кобальт
Мокшан Кобгль
Melayu Kobalt
Malti Kobalt, ²Kobaltu
Nahuatl Cobalto
Nederlands Kobalt
norsk Kobolt
Occitan Cobalt
ирон Кобальт
polski Kobalt
português Cobalto
Runasimi Kubaltu, ²Kuwaltu
română Cobalt
русский Кобальт
slovenčina Kobalt
slovenščina Kobalt
Samoan Kobaltimi
Samogitian Kuobalts
shqip Kobalt
српски Кобалт
Southern Sotho Khobalete
svenska Kobolt
Kiswahili Kobalti
தமிழ் கோபால்ட்
тоҷикӣ Кобалт
ไทย โคบอลต์
Türkçe Kobalt
ئۇيغۇرچە كوبالت
українська Кобальт
o‘zbek Kobalt
Tiếng Việt Coban
Võro Koobalt
中文

Sejarah

Ditemukan Di
1735
Ditemukan Oleh
Georg Brandt
Ditemukan Pada
Sweden
Asal Kata
From the German word "kobald" meaning "goblin" or evil spirit