Radiy
88
Ra
Guruh
2
Davr
7
Blok
s
Protonlar
Elektronlar
Neytronlar
88
88
138
Umumiy xususiyatlar
Atom raqami
88
Atom massasi
[226]
Mass raqami
226
Turkum
Ishqoriy yer metallar
Ranggi
Kumush
Radioaktivlik
Ha
From the Latin word radius meaning ray
Kristall tuzilma
Tana markazli kubik
Tarix
Radium was discovered by Marie Curie and Pierre Curie in 1898.
They extracted the radium compound from a uraninite sample.
Radium was isolated in its metallic state by Marie Curie and André-Louis Debierne in 1910 through the electrolysis of radium chloride by using a mercury cathode and distilling in an atmosphere of hydrogen gas.
They extracted the radium compound from a uraninite sample.
Radium was isolated in its metallic state by Marie Curie and André-Louis Debierne in 1910 through the electrolysis of radium chloride by using a mercury cathode and distilling in an atmosphere of hydrogen gas.
Qobiqdagi elektronlar soni
2, 8, 18, 32, 18, 8, 2
Elektron konfiguratsiyasi
[Rn] 7s2
Radium imparts a carmine red color to a flame
Jismoniy xususiyatlar
Faza
Qattiq modda
Zichlik
5,5 g/cm3
Erish harorati
973,15 K | 700 °C | 1292 °F
Qaynash harorati
2010,15 K | 1737 °C | 3158,6 °F
Eritish issiqligi
8 kJ/mol
Bugʻlanish issiqligi
125 kJ/mol
Solishtirma issiqlik sigʻimi
- J/g·K
Yer po‘stidagi miqdori
9,9×10-12%
Olamdagi miqdori
Nomaʼlum
CAS raqami
7440-14-4
PubChem CID raqami
6328144
Atom xususiyatlari
Atom radiusi
-
Kovalentlik radiusi
221 pm
Elektrmanfiylik
0,9 (Poling boʻyicha)
Ionlashish potensiali
5,2784 eV
Molyar hajm
45,20 cm3/mol
Issiqlik oʻtkazuvchanlik
0,186 W/cm·K
Oksidlanish darajasi
2
Qo‘llanilish sohalari
Radium was formerly used in self-luminous paints for watches, nuclear panels, aircraft switches, clocks, and instrument dials.
Radium chloride was used in medicine to produce radon gas which in turn was used as a cancer treatment.
The isotope 223Ra is currently under investigation for use in medicine as a cancer treatment of bone metastasis.
Radium chloride was used in medicine to produce radon gas which in turn was used as a cancer treatment.
The isotope 223Ra is currently under investigation for use in medicine as a cancer treatment of bone metastasis.
Radium is highly radioactive and carcinogenic
Izotoplar
Barqaror izotoplar
-Beqaror izotoplar
202Ra, 203Ra, 204Ra, 205Ra, 206Ra, 207Ra, 208Ra, 209Ra, 210Ra, 211Ra, 212Ra, 213Ra, 214Ra, 215Ra, 216Ra, 217Ra, 218Ra, 219Ra, 220Ra, 221Ra, 222Ra, 223Ra, 224Ra, 225Ra, 226Ra, 227Ra, 228Ra, 229Ra, 230Ra, 231Ra, 232Ra, 233Ra, 234Ra