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== == 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
∙ 15y ago
Wiki User
∙ 15y 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
The half-life of thorium-219 is approximately 1.04 minutes. This means that it takes roughly 1.04 minutes for half of a sample of thorium-219 to decay into a different element.
Wiki User
∙ 14y agoThe half life of thorium-219 is 1.05 microseconds.
Wiki User
∙ 14y 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
∙ 15y agoThorium 232 with 1,405.1010 years.
Wiki User
∙ 9y agoThe isotope thorium-245 doesn't exist.
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How much thorium-234 will remain after 2 half lives?
After 2 half-lives, 25% of the original amount of thorium-234 will remain. This is because half of the substance decays in each half-life period.
How much mass remains in Thorium 234 after a half?
Half-life is the time taken for half of the radioactive material to decay. In the case of Thorium-234, after one half-life, half of the initial mass would remain.
How many grams of Thorium-234 would be left after 96 days if there were 4 grams to start with?
After 96 days, there would be approximately 1 gram of Thorium-234 left from the initial 4 grams. Thorium-234 has a half-life of 24.1 days, so after each half-life, the amount of Thorium-234 would be halved.
What radioactive substance has the longest half-life?
One of the radioactive substances with the longest half-life is thorium-232, with a half-life of about 14 billion years. Another example is uranium-238, which has a half-life of about 4.5 billion years.
What period does thorium belong in?
Thorium belongs in the actinide series of the periodic table, specifically in period 7.
How long will it take a 2kg sample of Thorium-219 to decay to 15.6g?
Thorium-219 has a half-life of about 1.4 minutes. To calculate the time it takes for a 2kg sample to decay to 15.6g, you would need to use the radioactive decay formula. This would involve determining the number of half-lives it takes for the 2kg sample to decay to 15.6g.
How much thorium-234 will remain after 2 half lives?
After 2 half-lives, 25% of the original amount of thorium-234 will remain. This is because half of the substance decays in each half-life period.
How much mass remains in Thorium 234 after a half?
Half-life is the time taken for half of the radioactive material to decay. In the case of Thorium-234, after one half-life, half of the initial mass would remain.
How much thorium in grams is there in 2 half lives?
To calculate the amount of thorium remaining after 2 half-lives, you use the formula: amount = initial amount * (1/2)^n, where n is the number of half-lives. If we assume the initial amount is 1 gram, after 2 half-lives, there would be 0.25 grams of thorium remaining.
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
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?
After 48.2 days (two half-lives), one-fourth (25%) of the original thorium-234 sample will remain unchanged. Therefore, 25 g of the 100-g sample will be unchanged after 48.2 days.
How many grams of Thorium-234 would be left after 96 days if there were 4 grams to start with?
After 96 days, there would be approximately 1 gram of Thorium-234 left from the initial 4 grams. Thorium-234 has a half-life of 24.1 days, so after each half-life, the amount of Thorium-234 would be halved.
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 radioactive substance has the longest half-life?
One of the radioactive substances with the longest half-life is thorium-232, with a half-life of about 14 billion years. Another example is uranium-238, which has a half-life of about 4.5 billion years.
What period does thorium belong in?
Thorium belongs in the actinide series of the periodic table, specifically in period 7.
Is thorium reactive to magnets?
No, thorium is not reactive to magnets as it is not a ferromagnetic material. Thorium is a weakly paramagnetic material, meaning it only shows a very small magnetic response when exposed to a magnetic field.
How does thorium affects marine life?
Thorium doesn't affect the marine life.
