Technetium (Tc)

Symbol Tc
Atomic Number 43
Atomic Weight (98)
Group 7 (manganese family)
VIIA (Old IUPAC), VIIB (CAS)
Period 5
Block d

Planetary Bohr Model of Tc

Physical Properties

Density 11.5 g/cm3
Atomic Volume 8.5 cm3/mole
Atomic Radius 1.36 angstroms
Covalent Radius 156 pm
Radioactive Yes

States

Melting Point 2172.0 °C
Boiling Point 4877.0 °C
Heat Of Fusion 23.0 kJ/mole
Heat Of Vaporization 502.0 kJ/mole

Energy

Electronegativity 1.9 (Pauling Scale)
Electron Affinity -96 kJ/mol
1st Ionization Energy 702 kJ/mol
Specific Heat Capacity 0.24 J g−1 K−1
Thermal Conductivity 50.6 W·m−1·K−1

Electrons and Oxidation

Oxidation States +7,4,6
Electrons Per Shell 2 8 18 13 2
Electron Configuration [Kr] 4d5 5s2
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d5 5s2

Translations

English Technetium
Deutsch Technetium
Lëtzebuergesch Technetium
Nederlands Technetium
Afrikaans Technetium
Frysk Technetium
Dansk Technetium
Svenska Teknetium
Norsk Technetium
Íslenska Teknetn
Føroysk Technetium
Latin Technetium
Français Techntium
Español Tecnecio
Catalana Tecneci
Occitana Tecneci
Português Tecncio
Galego Tecnecio
Italiano Tecnezio
Furlan Tecnezi
Român Tehne?iu
Moldavian Tehne?iu
Armãneashte Tehnetsiumu
Русский ????????
Українска ????????
Byelorussian ????????
Polska Technet
Kaszëbsczi Technet
Čech Technecium
Slovenský Techncium
Slovenščina Tehnecij
Hrvatska Tehnecij
Српски ???????j??
Bosnian Tehnecij
Македонски ?????????
Български ????????
Lietuviškai Technecis
Lao Tehn?cijs
Sudovian Technecis
Cymraeg Technetiwm
Gaeilge na hÉireann Teicnitiam
Gàidhlig na h Teicnitiam
Gaelg Vanninagh heghnaihum
Cornish Technytyum
Brezhoneg Teknetiom
Ελληνική ????????
Shqip Teknec
Ossetian ????????
Euskera Teknezioa
Georgian ??????????
Suomi Teknetium
Eesti Tehneetsium
Magyar Techncium
Türkçe Teknesyum
Kazakh ????????
Uzbek ????????
Tajik Tehneci'
Mongolian ???????
日本語 ?????? [tekunechiumu]
中国话 ?
ไทย ??????????
Vietnamese Tecnexi
Bahasa Melayu Teknetium, Teknisium
العربيه ????????
Il-Malti Teknizjum
עברית ???????
Esperanto Teknecio

History

Discovered In
1937
Discovered By
Carlo Perrier, Emilio Segre
Discovered At
Italy
Word Origin
From the Greek word "technikos" meaning "artificial"