The explanation is the effect of ionizing radiation on tissues and materials.
Three uses are:
- sterilizing of instruments and parapharmaceutic items
- diagnostic with radioactive isotopes (scintigraphy)
- treatment of cancers with radioactive isotopes
Lightning conductors do not contain radioactive compounds. They are typically made of metal, such as copper or aluminum, and work by providing a path of least resistance for the lightning strike to follow, directing the electrical discharge safely into the ground. There is no need for radioactive materials in a lightning conductor.
You would probably be talking about nuclear fusion, but it is not available for use and probably won't be for another 50 years, so it's an academic matter. For useful power, fission reactors are the only technology we have, and they all use uranium and produce similar amounts of fission products
No. At least no more than any other rocks. Almost all materials contain some trace of radioactive material.
Least Common Denominator
Not all of the transition elements are radioactive. Many of them are, and some of them have common radioactive isotopes, but some of them have no naturally occurring radioactive isotopes. Please note that all elements have synthetic radioactive isotopes, at least.
Yes, at least theoretically
Atoms with stable nuclei are least likely to be radioactive. Typically, atoms with an even number of protons and neutrons are more stable and less likely to undergo radioactive decay. This includes elements such as carbon-12, oxygen-16, and nitrogen-14.
There's no "scientific explanation" for that, at least partly because it doesn't happen.
Typically, popcorn has no nutritional value. At least this is what i have been told from a medical university.Typically, popcorn has no nutritional value. At least this is what i have been told from a medical university.Typically, popcorn has no nutritional value. At least this is what i have been told from a medical university.Typically, popcorn has no nutritional value. At least this is what i have been told from a medical university.Typically, popcorn has no nutritional value. At least this is what i have been told from a medical university.Typically, popcorn has no nutritional value. At least this is what i have been told from a medical university.
Gas
Plutonium is a very toxic element; also is a radioactive element.
Radon is a noble gas and is radioactive. All of the other noble gasses have at least some synthetic radioactive isotopes. Radioactive isotopes of both krypton and argon exist in nature in trace quantities.