Because they are essential.
you cannot convert radioactive material into nonradioactive material, you can only shield it, dilute it or place it at a safe distance.
A material that emits radiation Like Uranium, Plutonium, Radium, etc
They emit harmful radiation that can damage the cells of any living thing in range
It varies, depending on the particular radionuclide involved. The half-life of Carbon-14, for instance, is 5730 years, while Iodine-131 is 8 days, Cesium-137 is 30 years, and Uranium-235 is 700...
lead gloves and lead aprons are used.it is best if radioactive samples are handled by remote cntrol and maintained at a distance.
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