0
== == Naturally occurring uranium is a mixture of three isotopes. The most abundant (greater than 99%) and most stable is uranium-238 (half-life 4.5 x 109 years); also present are uranium-235 (half-life 7 x 108 years) and uranium-234 (half-life 2.5 x 105 years). Different isotopes have different half-lives. The most stable isotope of uranium, 238U, has a half-life of about 4.5 billion years.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoThere is actually no single answer to this question, because Thorium has several isotopes, each with its own half-life. In order of atomic weight, these are: Th228: half-life 1.9 years Th230: half-life 75,400 years Th232: half-life 14,000,000,000 years Th234: half-life 24.1 days
Wiki User
∙ 13y agoThe half life of thorium-219 is 1.05 microseconds.
Wiki User
∙ 13y agoThe half life of 219Th is 1.05 microsesconds.
Wiki User
∙ 9y agoHalf life is the period of time after that the amount of a material is reduced by half.
The isotope thorium-234 has a half life of 24,10(3) days.
Wiki User
∙ 14y agoThorium 232 with 1,405.1010 years.
Wiki User
∙ 9y agoThe isotope thorium-245 doesn't exist.
Add your answer:
Earn +20 pts
What period does thorium belong in?
Thorium is a member of the actinoids family, period 7 in the periodic table of Mendeleev. The half life of 232Th is 1,405.1010 years.
What element is the great great granddaughter of U-238?
Radium 226 would be the great great granddaughter of Uranium 238.Uranium 238 decays to Thorium 234 with a half-life of 4.5 billion years.Thorium 234 decays to Protactinium 234 with a half-life of 24 days. (child)Protactinium 234 decays to Uranium 234 with a half-life of 1.2 minutes. (granddaughter)Uranium 234 decays to Thorium 230 with a half-life of 240,000 years. (great granddaughter)Thorium 230 decays to Radium 226 with a half-life of 75,000 years. Radium 226 has a half-life of 1600 years.Subsequent decay products are:Radon 222 (half-life = 38 days)Polonium 218 (half-life = 3.1 minutes)Lead 214 (half-life = 27 minutes)Bismuth 214 (half-life = 20 minutes)Polonium 214 (half-life = 160 microseconds)Lead 210 (half-life = 22 years)Bismuth 210 (half-life = 5 days)Polonium 210 (half-life = 138 days)Lead 206 (stable - does not decay further)
What type of radioactive decay result in uranium -238 becoming thorium 234.?
This is an alpha decay.The half-life of uranium-238 is 4,468.10ex.9 years.
How much mass remains in Thorium 234 after a half?
After 24,10(3) days (the half-time of this isotope) the mass is 50 %.
How is thorium 234 changed into uranium 234?
Thorium-234 is not changed in uranium-234.- Th-234 is a decay product of U-238- By beta decay Th-234 is transformed in Pa-234
How long will it take a 2kg sample of Thorium-219 to decay to 15.6g?
Approx. 7 microseconds because the half life of thorium 219 is 1,05± 0,03 μs.
How much thorium in grams is there in 2 half lives?
The half life of thorium-232 is 1,405(6).10e10 years.
Thorium-234 has a half-life of 24.1 days. How much of a 100-g sample of thorium-234 will be unchanged after 48.2 days?
Thorium-234 has a half-life of 24.1 days. How much of a 100-g sample of thorium-234 will be unchanged after 48.2 days?
Is thorium reactive to magnets?
Thorium is a paramagnetic metal, not ferromagnetic.
How long will it take 50 milligrams of thorium-232 to deacy to 25 milligrams?
Approximately 14 billion years, the half-life of Thorium 232
What period does thorium belong in?
Thorium is a member of the actinoids family, period 7 in the periodic table of Mendeleev. The half life of 232Th is 1,405.1010 years.
Thorium-234 has a half life of about 24 days of a sample that originally contained 100 grams of thorium-234 now only contains 25 grams.what is the age of the sample?
25 grams of Thorium-234
What element is the great great granddaughter of U-238?
Radium 226 would be the great great granddaughter of Uranium 238.Uranium 238 decays to Thorium 234 with a half-life of 4.5 billion years.Thorium 234 decays to Protactinium 234 with a half-life of 24 days. (child)Protactinium 234 decays to Uranium 234 with a half-life of 1.2 minutes. (granddaughter)Uranium 234 decays to Thorium 230 with a half-life of 240,000 years. (great granddaughter)Thorium 230 decays to Radium 226 with a half-life of 75,000 years. Radium 226 has a half-life of 1600 years.Subsequent decay products are:Radon 222 (half-life = 38 days)Polonium 218 (half-life = 3.1 minutes)Lead 214 (half-life = 27 minutes)Bismuth 214 (half-life = 20 minutes)Polonium 214 (half-life = 160 microseconds)Lead 210 (half-life = 22 years)Bismuth 210 (half-life = 5 days)Polonium 210 (half-life = 138 days)Lead 206 (stable - does not decay further)
How does thorium affects marine life?
Thorium doesn't affect the marine life.
Common commpouds of thorium?
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.
How does presence of thorium effect marine life?
Thorium doesn't affect marine life.
What is the difference between Thorium 230 and Thorium 234 is one more dangerous than the other?
Thorium 230 is an alpha emitter with half life 75,380 years. Therefore it is dangerous if ingested. Alpha particles don't penetrate the skin, so it would not be dangerous to handle carefully, but if ingested alpha particles can damage internal organs. Thorium 234 is a beta emitter with half life 24.1 days. So 230 is the more dangerous.
