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Periodic Table - Elements - Technetium
| Symbol |
Tc |
|
| Atomic Number |
43 |
Relative Atomic Mass
12C = 12.0000 |
98.9063 (99Tc) |
Atomic Radius
pm |
136 |
First Ionisation Energy
kJ mol-1 |
702 |
| Electronegativity |
1.9 |
Density
kg m-3 |
11500 [293 K] (est.) |
Molar Volume
cm3 |
8.6 (est.) |
Thermal Conductivity
W m-1 K-1 |
50.6 [300 K] |
Melting Point
K |
2445 |
Boiling Point
K |
5150 |
| Number of Isotopes |
25 |
Ground State Electron
Configuration |
[Kr]4d55s2 |
| Term Symbol |
6S5/2 |
| Discovery |
Discovered by C. Perrier and E.G. Segré (Palermo, Sicily) in 1937 |
| Name Derived From |
Greek technikos meaning 'artificial' |
Name in Other
Languages |
 Croatian | Tehnecij |
 Danish | technetium |
 Dutch | technetium |
 Finnish | teknetium |
 French | technétium |
 German | Technetium |
 Italian | tecneto |
 Norwegian | technetium |
 Portuguese | tecnécio |
 Spanish | tecnecio |
 Swedish | teknetium |
| Peter van der Krogt's Element Multidict - element name translations in over 48 langauges |
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Page compiled: Wed Sep 05 18:37:56 GMT+01:00 2001
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