Radiy

88
Ra
Guruh
2
Davr
7
Block
s
Protonlar
Elektronlar
Neytronlar
88
88
138
General Properties
Atom raqami
88
Atom massasi
[226]
Mass Number
226
Turkum
Ishqoriy yer metallar
Ranggi
Silver
Radioaktivlik
Ha
From the Latin word radius meaning ray
Crystal Structure
Body Centered Cubic
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.
Electrons per shell
2, 8, 18, 32, 18, 8, 2
Elektron konfiguratsiyasi
[Rn] 7s2
Ra
Radium imparts a carmine red color to a flame
Physical Properties
Phase
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
Heat of Fusion
8 kJ/mol
Heat of Vaporization
125 kJ/mol
Solishtirma issiqlik sigʻimi
-
Abundance in Earth's crust
9,9×10-12%
Abundance in Universe
Nomaʼlum
Pierre
Image Credits: hp.ujf.cas.cz
Pierre and Marie Curie in the laboratory
CAS Number
7440-14-4
PubChem CID Number
6328144
Atomic Properties
Atom radiusi
-
Kovalentlik radiusi
221 pm
Elektrmanfiylik
0,9 (Poling boʻyicha)
Ionization Potential
5,2784 eV
Molyar hajm
45,20 cm3/mol
Issiqlik oʻtkazuvchanlik
0,186 W/cm·K
Oksidlanish darajasi
2
Applications
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 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