Of course. If it is exposed to air or even skin, it can do majour damage. Ie. the nuclear explosion in Chernobyl.
There is radioactive material in any country that has done nuclear tests. In The United States of America there were many tests. These were mostly in Nevada. If you were to get clearance to go to the test site you would see the craters everywhere.
One eighth would be left.
The amount of radioactive material in a package of radioactive materials is typically measured in Becquerels (Bq) or Curies (Ci). This information is provided on the label of the package by the manufacturer or supplier. It is important to follow safety guidelines and regulations when handling radioactive materials to prevent exposure and harm.
NIMBY
As radium is radioactive, radium chloride would also be radioactive. Any compounds make with any radioactive material are radioactive, and they cannot be "not" radioactive. Radioactive material doesn't really care if it is "alone" or in compound; it will be radioactive in any case.
Meteors are typically not radioactive as they are composed of various elements and minerals found in space. However, if a meteorite were to contain radioactive materials, it would need to be tested using specialized equipment to detect radiation levels.
If cancer is classified as 'extra arms', then the second one.
In radiometric dating, the amount of a certain radioactive isotope in an object is compared with a reference amount. This ratio can then be used to calculate how long this isotope has been decaying in the object since its formation. For example, if you find that the amount of radioactive isotope left is one half of the reference amount, then the amount of time since the formation of the object would be equal to that radioactive isotope's half-life.
In one cycle, the material would be reduced to one half of the original, leaving one half of the material. In the second cycle (54/27 = 2), there would be 1/2 of that half, leaving 1/4 of the original material.
Well you could eat uranium or other or radioactive waste... But as Uranium is expensive and rare, and radioactive waste is deadly, eating radiation would result in killing you. This will not give you super powers like shown in cartoons, but it will end up with you receiving radiation poisoning.
A fundamental property of radioactive material is that the atomic nucleus has an unstable configuration. The nucleus of a single atom of such material may break down at any instant, or may never break down at all, but with a large number of atoms in a collection, there is a statistical probability that half of them will break down in a given amount of time, which is known as the "half life" for that radioactive material. Exactly why this should be so is a mystery which cannot be adequately explained, but is observed and accepted as such. A deeper understanding of this phenomenon would probably give us a better insight into the true nature of the universe as a whole.
After 61.5 years, five half-lives would have passed for tritium (12.3 years x 5 = 61.5 years). Each half-life reduces the amount of radioactive material by half. Therefore, after 61.5 years, 3.125% (0.5^5) of the initial 118mg of tritium would remain radioactive.