Aktiniy
89
Ac
Guruh
Nomaʼlum
Davr
7
Block
f
Protonlar
Elektronlar
Neytronlar
89
89
138
General Properties
Atom raqami
89
Atom massasi
[227]
Mass Number
227
Turkum
Aktinoidlar
Ranggi
Silver
Radioaktivlik
Ha
From the Greek aktis, aktinos, meaning beam or ray
Crystal Structure
Face Centered Cubic
Tarix
André-Louis Debierne, a French chemist, discovered actinium in 1899.
He separated it from pitchblende residues left by Marie and Pierre Curie after they had extracted radium.
Friedrich Oskar Giesel independently discovered actinium in 1902 as a substance being similar to lanthanum.
He separated it from pitchblende residues left by Marie and Pierre Curie after they had extracted radium.
Friedrich Oskar Giesel independently discovered actinium in 1902 as a substance being similar to lanthanum.
Electrons per shell
2, 8, 18, 32, 18, 9, 2
Elektron konfiguratsiyasi
[Rn] 6d1 7s2
Actinium glows in the dark with a pale blue light
Physical Properties
Phase
Qattiq modda
Zichlik
10,07 g/cm3
Erish harorati
1323,15 K | 1050 °C | 1922 °F
Qaynash harorati
3471,15 K | 3198 °C | 5788,4 °F
Heat of Fusion
14 kJ/mol
Heat of Vaporization
400 kJ/mol
Solishtirma issiqlik sigʻimi
0,12 J/g·K
Abundance in Earth's crust
Nomaʼlum
Abundance in Universe
Nomaʼlum
CAS Number
7440-34-8
PubChem CID Number
Nomaʼlum
Atomic Properties
Atom radiusi
-
Kovalentlik radiusi
215 pm
Elektrmanfiylik
1,1 (Poling boʻyicha)
Ionization Potential
5,17 eV
Molyar hajm
22,54 cm3/mol
Issiqlik oʻtkazuvchanlik
0,12 W/cm·K
Oksidlanish darajasi
3
Applications
Actinium is used as an active element of radioisotope thermoelectric generators, for example in spacecraft.
The medium half-life of 227Ac makes it very convenient radioactive isotope in modeling the slow vertical mixing of oceanic waters.
225Ac is applied in medicine to produce 213Bi in a reusable generator or can be used alone as an agent for radiation therapy.
The medium half-life of 227Ac makes it very convenient radioactive isotope in modeling the slow vertical mixing of oceanic waters.
225Ac is applied in medicine to produce 213Bi in a reusable generator or can be used alone as an agent for radiation therapy.
Actinium is highly radioactive
Izotoplar
Barqaror izotoplar
-Beqaror izotoplar
206Ac, 207Ac, 208Ac, 209Ac, 210Ac, 211Ac, 212Ac, 213Ac, 214Ac, 215Ac, 216Ac, 217Ac, 218Ac, 219Ac, 220Ac, 221Ac, 222Ac, 223Ac, 224Ac, 225Ac, 226Ac, 227Ac, 228Ac, 229Ac, 230Ac, 231Ac, 232Ac, 233Ac, 234Ac, 235Ac, 236Ac