Ac | Z = 89 | ◊ ◊ ◊ ◊ ◊ |
Actinium | |
From the Greek "aktis", meaning "beam" | ||||
(AM) Atomic Mass | 227.0278 amu | ♦ | Oxidation States | +3 |
(BP) Boiling Point | 3200  °C | ♦ | (MP) Melting Point | 1050 °C |
(ρ) Density | n/a | ♦ | Crystal Structure | Face Centered Cubic |
( χ ) Electronegativity | 1.1 | ♦ | (AR) Atomic Radius | n/a |
Physical State | Solid | ♦ | (C) Heat Capacity | 0.12 J/g °C |
Electronic-Config | [Rn]  6d1  7s2  | ♦ | (I1) First Ionization E | 498.83 kJ/mol |
(ΔHvap) Heat of Vaporization | 400 kJ/mol | ♦ | (ΔHfus) Heat of Fusion | 14 kJ/mol |
Year of Discovery | 1899 | ♦ | Location of Discovery | 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 |