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What isotope iodine iron phosphorus radium has the longest half-time?
Phosphorus, iron, and iodine all have at least one isotope that is stable, and any of these would do for the longest half life. In fact, the radioactive isotopes of phosphorus are all synthetic, so radioactive phosphorus is not found in nature.
Iodine 131 has a half life of 8 days. When will 10 lbs of iodine 131 not be radioactive anymore?
Never. As a simple exponential-decay problem, it can get as small as you want if you're willing to wait long enough, but it never reaches zero.
Is iodine-127 radioactive?
No, iodine-127 is not radioactive. It is a stable isotope of iodine, which means it does not undergo radioactive decay and does not emit harmful radiation.
Is Iodine a non-radioactive metal?
No: Iodine is not a metal at all, but a nonmetal. It is not necessarily radioactive, but has some radioactive isotopes.
What is meant by half life of radioactive isotopes?
This is the time in which half the the atoms was disintegrated.
What is the sample of the radioactive isotope 131I decays its half-life?
Iodine-131 has a half-life of about 8 days.
What isotope iodine iron phosphorus radium has the longest half-time?
Phosphorus, iron, and iodine all have at least one isotope that is stable, and any of these would do for the longest half life. In fact, the radioactive isotopes of phosphorus are all synthetic, so radioactive phosphorus is not found in nature.
What is the radioactive half-life of water?
Ordinary water is not radioactive, so it has no half-life.
Iodine 131 has a half life of 8 days. When will 10 lbs of iodine 131 not be radioactive anymore?
Never. As a simple exponential-decay problem, it can get as small as you want if you're willing to wait long enough, but it never reaches zero.
Radioactive iodine-131 has a half-life of eight days. The amount of a 200.0 gram sample left after 32 days would be -?
12.5 g
What is the half -life of most radioactive istopes?
The half-life of most radioactive isotopes ranges from fractions of a second to billions of years. Some common radioactive isotopes, like carbon-14 and uranium-238, have half-lives of thousands to millions of years, while others, like iodine-131, have half-lives of only days or even seconds.
The time it takes for half of the radioactive element to decay is the element's what?
The time it takes for half the atoms in a sample of a radioactive element to decay is called the half life.
How does half life work in the context of radioactive decay?
In the context of radioactive decay, half-life is the time it takes for half of the radioactive atoms in a sample to decay. This means that after one half-life, half of the original radioactive atoms have decayed, and after two half-lives, three-quarters have decayed, and so on. The concept of half-life helps scientists understand the rate of decay of radioactive substances.
How much of an 80-milligram sample of Iodine-131 would be left after 32 days?
After 32 days, approximately 5 milligrams of the 80-milligram sample of Iodine-131 would be left. Iodine-131 has a half-life of about 8 days, so after each 8-day period, half of the remaining sample will decay.
Is iodine-127 radioactive?
No, iodine-127 is not radioactive. It is a stable isotope of iodine, which means it does not undergo radioactive decay and does not emit harmful radiation.
What radioactive element is the time it takes for half of the radioactive atoms to decay?
The half-life
What is the half life of an isotope?
The half-life of a radioactive isotope is the amount of time it takes for one-half of the radioactive isotope to decay. The half-life of a specific radioactive isotope is constant; it is unaffected by conditions and is independent of the initial amount of that isotope.
