What is the question being asked here? 'Rich country in the world' is not a question.
because its a rich country
some parts are rich and some are poor. In global terms, the USA is a very rich country, perhaps the richest, depending on the criteria you use.
It used to be quite rich country until president gbagbo changed the country into a poor place
poor
Thorium was discovered in Sweden by Jons Jakob Berzelius in 1829.
Today India has probable the biggest reserve of thorium minerals.
India
Probably from India.
Common compounds of thorium: thorium dioxide, thorium trifluoride, thorium tetrafluoride, thorium tetrachloride, thorium triiodide, thorium diiodide, thorium tetraiodide, thorium nitrate, thorium oxalate, thorium carbide, thorium sulfides, thorium nitride, thorium oxinate, etc.
Countries with thorium reserves are: India, Australia, Turkey, United States, Canada, Russia, China, Brazil, Norway, etc.
Hazards and Health Considerations: Thorium presents both a toxic and radiological hazard. Toxicologically, it causes heavy metal poisoning similar to lead or the uranium isotopes. Biologically, thorium accumulates in the skeletal system where it has a biological half-life of 200 years, the same as plutonium. An M 17 protective mask and standard anti-contamination clothing will adequately protect against thorium.
Thorium and fluorine Thorium trifluoride - ThF3 Thorium tetrafluoride - ThF4
Maryland is a rich country!
yes it is a rich country
Australia is the country with the largest uranium reserves.
Thorium don't smell.