0
The following come close:
* thulium-168, 93.1 days
* fermium-257, 100.5 days
* thulium-170, 128.6 days
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
What is the half life of the Radioisotope Fe55?
It is 100 years.
If a 100 g sample of a radioactive element decays to 25 g in 4 days what is the half-life of the element?
If a radioactive sample contains 1.25g of an isotope with a half-life of 4.0 days, then 0.625g (1/2) of the isotope will remain after 4.0 days, 0.3125g (1/4) after 8.0 days, 0.15625g (1/8) after 12.0 days, etc. AT = A0 2(-T/H)
What is the half life of iodine-129?
Iodine-129 has a half-life of 15.7 million years and is used in some medical applications. Because of its release in nuclear testing and reactor accidents, it is a potent bio-contaminant and can affect the human thyroid gland. Its human biological half-life is about 100 days (in the thyroid gland).
What is the sample of the radioactive isotope 131I decays its half-life?
Iodine-131 has a half-life of about 8 days.
The half-life of gold-198 is 2.7 days After 5.4 days how much of the original gold-198 remains?
one-quarter After 2.7 Days half of Gold remains. After another 2.7 days half of THAT half remains, which is 25% 5.4
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?
What is the half life of the Radioisotope Fe55?
It is 100 years.
Does fermium-257 undergo nuclear decay?
Alpha decay to californium 253. The half life of fermium 257 is 100.5 days.
If the half life of an element is 5 days and 100 milligrams of the element is initially available how many milligrams (mg) of the element is available after 20 days?
The answer is 2. If after one half-life only half of the element remains, then after another half-life half of what was there only remains. So a half of a half is a quarter (or a fourth). So that's 2 half-lives.
A 100 gram sample of a radioactive element is present at 9 a.m. on Monday and only 25 grams of the element can be detected at 9 a.m. on Friday. What is the half-life of the source?
The half-life is 2 days. You start with 100 grams. In one half life, you will lose 50 grams and have 50 grams remaining. In a second half-life, you will lose 25 of the 50 grams and have 25 grams left. You will have lost 75 grams of a 100 gram sample of radioactive material and have only 25 grams of it left after two half-lives. That means there are two half-lives from 9 a.m. Monday to 9 a.m. Friday. That's 4 days for 2 half-lives, or 2 days for one half-life.
If a 100 g sample of a radioactive element decays to 25 g in 4 days what is the half-life of the element?
If a radioactive sample contains 1.25g of an isotope with a half-life of 4.0 days, then 0.625g (1/2) of the isotope will remain after 4.0 days, 0.3125g (1/4) after 8.0 days, 0.15625g (1/8) after 12.0 days, etc. AT = A0 2(-T/H)
What is the shelf life of half and half?
4 days
The half-life of Au-198 is 2.7 days When there are 800 atoms of Au-198 in a sample a scientist starts a stopwatch The scientist stops the stopwatch at 8.1 days how many atoms of Au-198 remaining?
8.1 days is, if half-life is 2.7 days, 3 half-lives. 12.5%, or 12.5 g, of 79198Au would remain after three half-lives.
How many atoms would remain of Au-198 that has 800 atoms after 8.1 days if its half-life is 2.7 days?
Approx 100 atoms would remain.
What is the half life of iodine-129?
Iodine-129 has a half-life of 15.7 million years and is used in some medical applications. Because of its release in nuclear testing and reactor accidents, it is a potent bio-contaminant and can affect the human thyroid gland. Its human biological half-life is about 100 days (in the thyroid gland).
How long does it take for trilipix to be out of your system?
Your question is related to the half life of drug. Above drug has half life of about 20 hours. So it will be out of your system by 5 times it's half life. It means 100 hours. So it will be practically out of your system in about four days from last dose.
How long is 100 days?
3 in half months
