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|
name |
Actinium |
latin |
Actinium |
french |
Actinium |
german |
Actinium |
symbol |
Ac |
proton number |
89 |
atomic weight |
227.0278 |
Pauling electronegativity |
1.1 |
electronic configuration |
[Rn] 6d17s2 >> show long |
melting point |
1323 K, 1050°C, 1922°F |
boiling point |
3573 K, 3300°C, 5972°F |
group |
3 |
period |
7 |
state (by 20°C) |
solid |
oxidation states |
+3 |
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Discoverer
Year of discovery |
Discoverer |
1899 |
Andre Debierne |
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