creating fusion bombs
Half lives are extremely consistent and are quite well known.
Radioactive materials have long half-lives, which means they remain hazardous for thousands of years. They can emit ionizing radiation that can penetrate barriers and pose risks to human health and the environment. Proper disposal methods need to be secure to prevent widespread contamination and exposure.
After three half-lives, 12.5% of the radioactive isotope is remaining. This is because each half-life reduces the amount of radioactive material by half.
I Led 3 Lives - 1953 Radioactive 3-28 was released on: USA: 1956
Oh, dude, no way! Osmium is not radioactive. It's actually one of the densest elements on Earth. So, like, you can chill knowing that osmium won't give you any superpowers or turn you into a mutant or anything.
Silver itself is not radioactive. However, certain isotopes of silver can be radioactive. For example, silver-108 and silver-110 are radioactive isotopes with long half-lives that can undergo radioactive decay. These isotopes are not commonly found in nature.
Radioactive substances have half-lives. This is because the isotope constantly is changing from the radioactive isotope to a daughter element. For example, eventually, when uranium's radioactivity is gone, it becomes lead. After one half life of a radioactive substance, only 50% of that substance is still radioactive. Therefore, after one half-life, a piece of uranium is 50% lead and therefore %50 less radioactive. After another half-life, it has 25% of the original radioactivity, and 75% of the original uranium has become lead. This is the problem with radioactive wastes. It takes many years just for one half lives for some substances, such as uranium. Because radioactivity is harmful, those substances have to be stored until they are no longer radioactive. So, in short, the problem with disposing of radioactive wastes is that they have long half-lives. (although this is not true with ALL substances because some have short half-lives, but, in general, radioactive substances have long half-lives.
The correct answer is: Half-lives are not affected by temperature.
Scientists use the concept of half-life to determine the age of a sample by measuring the remaining amount of a radioactive isotope in the sample. By knowing the half-life of the isotope and the initial amount present, they can calculate how much time has passed since the sample was formed. This method is commonly used in radiometric dating of rocks, fossils, and other materials.
Neodymium is radioactive, though for most practical purposes it can be regarded as stable. 30.4% of neodymium is of two radioactive isotopes, but their half lives are very long, the shorter being 2,290,000,000,000,000 years. Like all other elements, neodymium has synthetic radioactive isotopes.
There is no relationship between the atomic radius and you knowing it.
12.5%