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- https://chem.libretexts.org/Sandboxes/khaas/Inorganic_Chemistry_II_(CHEM4210)/08%3A_Lanthanide_and_Actinide/8.02%3A_The_Actinides/8.2.14%3A_Chemistry_of_ThoriumThorium was discovered in 1828 by the Norwegian mineralogist Morten Thrane Esmark and was identified by the Swedish chemist Jons Jakob Berzelius. It is a gray, radioactive metal which is fairly abunda...Thorium was discovered in 1828 by the Norwegian mineralogist Morten Thrane Esmark and was identified by the Swedish chemist Jons Jakob Berzelius. It is a gray, radioactive metal which is fairly abundant in the earth's crust (more than twice as much as tin) and is the first of the so-called "actinide" series which ends with lawrencium (element 103). The long half-life of the principal isotope, Th-232, (about 10 10 years) insures that there will be plenty for quite some time to come!
- https://chem.libretexts.org/Courses/Tennessee_State_University/CHEM_4210%3A_Inorganic_Chem_II_(Siddiquee)/08%3A_Lanthanides_and_Actinides/8.02%3A_The_Actinides/8.2.14%3A_Chemistry_of_ThoriumThorium was discovered in 1828 by the Norwegian mineralogist Morten Thrane Esmark and was identified by the Swedish chemist Jons Jakob Berzelius. It is a gray, radioactive metal which is fairly abunda...Thorium was discovered in 1828 by the Norwegian mineralogist Morten Thrane Esmark and was identified by the Swedish chemist Jons Jakob Berzelius. It is a gray, radioactive metal which is fairly abundant in the earth's crust (more than twice as much as tin) and is the first of the so-called "actinide" series which ends with lawrencium (element 103). The long half-life of the principal isotope, Th-232, (about 10 10 years) insures that there will be plenty for quite some time to come!
- https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Supplemental_Modules_and_Websites_(Inorganic_Chemistry)/Descriptive_Chemistry/Elements_Organized_by_Block/4_f-Block_Elements/The_Actinides/Chemistry_of_ThoriumThorium was discovered in 1828 by the Norwegian mineralogist Morten Thrane Esmark and was identified by the Swedish chemist Jons Jakob Berzelius. It is a gray, radioactive metal which is fairly abunda...Thorium was discovered in 1828 by the Norwegian mineralogist Morten Thrane Esmark and was identified by the Swedish chemist Jons Jakob Berzelius. It is a gray, radioactive metal which is fairly abundant in the earth's crust (more than twice as much as tin) and is the first of the so-called "actinide" series which ends with lawrencium (element 103). The long half-life of the principal isotope, Th-232, (about 10 10 years) insures that there will be plenty for quite some time to come!
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/24%3A_Nuclear_Chemistry/24.05%3A_Background_RadiationThis page discusses the historical use of hot baths for muscle relief and the perceived benefits of radioactive hot springs. It explains background radiation, particularly from radon gas, its link to ...This page discusses the historical use of hot baths for muscle relief and the perceived benefits of radioactive hot springs. It explains background radiation, particularly from radon gas, its link to increased lung cancer risk for smokers, and emphasizes the importance of testing homes for radon levels. Additionally, it suggests affordable methods to mitigate radon exposure in residential areas.
