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Science
Periodic Table - Elements - Americium
| Symbol |
Am |
|
| Atomic Number |
95 |
Relative Atomic Mass
12C = 12.0000 |
243.0614 (243Am) |
Atomic Radius
pm |
173 |
First Ionisation Energy
kJ mol-1 |
578.2 |
| Electronegativity |
1.3 |
Density
kg m-3 |
13670 [293 K] |
Molar Volume
cm3 |
17.78 |
Thermal Conductivity
W m-1 K-1 |
10 [300 K] (est.) |
Melting Point
K |
1445 |
Boiling Point
K |
2880 |
| Number of Isotopes |
23 |
Ground State Electron
Configuration |
[Rn]5f77s2 |
| Term Symbol |
8S7/2 |
| Discovery |
Discovered by G.T. Seaborg, R.A. James, L.O. Morgan and A. Ghiorso (Chicago, USA) in 1944 |
| Name Derived From |
English America |
Name in Other
Languages |
 Croatian | Amercij |
 Danish | americium |
 Dutch | americium |
 Finnish | amerikium |
 French | américium |
 German | Americium |
 Italian | americio |
 Norwegian | americium |
 Portuguese | amerício |
 Spanish | americio |
 Swedish | americium |
| Peter van der Krogt's Element Multidict - element name translations in over 48 langauges |
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