What are 5 radioactive isotopes?
Radioactive Elements
| Element | Most Stable Isotope | Half-life of Most Stable Isotope |
|---|---|---|
| Actinium | Ac-227 | 21.77 years |
| Thorium | Th-229 | 7.54 x 104 years |
| Protactinium | Pa-231 | 3.28 x 104 years |
| Uranium | U-236 | 2.34 x 107 years |
What are the 3 radioactive isotopes?
Radioactive isotopes of radium, thorium, and uranium, for example, are found naturally in rocks and soil. Uranium and thorium also occur in trace amounts in water. Radon, generated by the radioactive decay of radium, is present in air.
What are 5 uses of radioactive isotopes?
Different chemical forms are used for brain, bone, liver, spleen and kidney imaging and also for blood flow studies. Used to locate leaks in industrial pipe lines…and in oil well studies. Used in nuclear medicine for nuclear cardiology and tumor detection. Used to study bone formation and metabolism.
What are 3 uses of radioactive isotopes?
Medical Applications
| Isotope | Use |
|---|---|
| 60Co | gamma ray irradiation of tumors |
| 99mTc* | brain, thyroid, liver, bone marrow, lung, heart, and intestinal scanning; blood volume determination |
| 131I | diagnosis and treatment of thyroid function |
| 133Xe | lung imaging |
What are the four radioactive isotopes?
There are four types of radiation given off by radioactive atoms: Alpha particles. Beta particles….When uranium-238 decays, it produces several isotopes of:
- Thorium.
- Radium.
- Radon.
- Bismuth.
Why is carbon-14 used?
carbon-14, the longest-lived radioactive isotope of carbon, whose decay allows the accurate dating of archaeological artifacts. In carbon-14 dating, measurements of the amount of carbon-14 present in an archaeological specimen, such as a tree, are used to estimate the specimen’s age.
Why is carbon-14 unstable?
Because carbon-14 has six protons, it is still carbon, but the two extra neutrons make the nucleus unstable. In order to reach a more stable state, carbon-14 releases a negatively charged particle from its nucleus that turns one of the neutrons into a proton.
What are examples of radioactive isotopes?
What are some commonly-used radioisotopes?
| Radioisotope | Half-life |
|---|---|
| Hydrogen-3 (tritium) | 12.32 years |
| Carbon-14 | 5,700 years |
| Chlorine-36 | 301,000 years |
| Lead-210 | 22.2 years |
What do radioactive isotopes do?
Radioactive decay Atoms with an unstable nucleus regain stability by shedding excess particles and energy in the form of radiation. The process of shedding the radiation is called radioactive decay. The radioactive decay process for each radioisotope is unique and is measured with a time period called a half-life.
What are the 3 main types of radiation?
The three most common types of radiation are alpha particles, beta particles, and gamma rays.
What is the difference between carbon-12 and carbon-14?
Carbon-14 has six protons and eight neutrons in its nucleus. By contrast, most of the carbon in our bodies and in the outside world, known as carbon-12, has six protons and six neutrons.
What are the properties of a radioactive isotope?
Properties of Radioactive Isotopes Radioactive decay is the process in which a radioactive atom spontaneously gives off radiation in the form of energy or particles to reach a more stable state. It is important to distinguish between radioactive material and the radiation it gives off.
Where are radioactive isotopes found in the world?
Some radioactive isotopes are present as terrestrial radiation. Radioactive isotopes of radium, thorium, and uranium, for example, are found naturally in rocks and soil. Uranium and thorium also occur in trace amounts in water. Radon, generated by the radioactive decay of radium, is present in air.
Which is the only isotope known to be stable indefinitely?
isotope: Radioactive isotopes. Only a small fraction of the isotopes are known to be stable indefinitely. All the others disintegrate spontaneously with the release of energy by processes broadly designated as radioactive decay.
What kind of material is unstable and gives off radiation?
Radioactive Material — Material that contains unstable (radioactive) atoms that give off radiation as they decay. Radionuclide — An unstable and therefore radioactive form of a nuclide.