Ac | Z = 89 | ◊ ◊ ◊ ◊ ◊ |
Actinium | |
From the Greek "aktis", meaning "beam" | ||||
(AM) Atomic Mass | 227.0278 amu | ♦ | ![]() |
+3 |
![]() |
3200  °C | ♦ | ![]() |
1050 °C |
![]() |
n/a | ♦ | ![]() |
Face Centered Cubic |
![]() |
1.1 | ♦ | ![]() |
n/a |
![]() |
Solid | ♦ | (C) Heat Capacity | 0.12 J/g °C |
Electronic-Config | [Rn]  6d1  7s2  | ♦ | ![]() |
498.83 kJ/mol |
![]() |
400 kJ/mol | ♦ | ![]() |
14 kJ/mol |
![]() |
1899 | ♦ | ![]() |
France |
(E°) Standard Potential | Ac3+⇔ Ac (-2.200 V) | |||
Stable isotopes | None. All natural isotopes are radioactive | |||
Discovered/Synthesized by | André-Louis Debierne | |||
Natural Source | The mineral/ore pitchblende | |||
Common Uses | Cancer medicine, neutron source | |||
Other Info | Found in pitchblende | |||
Previous Element![]() |
![]() |
Next Element![]() |
||
Back to Table![]() |
Common Properties![]() |
|||
Home Page![]() |
Definitions![]() |