iodine
cobalt
The hard magnetic metal used in the production of steel is usually iron, which can be magnetized to produce permanent magnets. The radioactive form of the element used in cancer treatment is typically cobalt-60, which emits gamma rays that can be focused on a tumor to destroy cancer cells.
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Yes, radioactive isotopes are largely used for the treatment of cancer.
Uranium
See a doctor immediately.
The name for the time required for half of a radioactive element to decay into a stable element is called the half-life. It is a constant value unique to each radioactive isotope, and it is used to measure the rate of radioactive decay.
lead
Americium 241
The element used as a target substance in Irene Joliot-Curie's experiments was beryllium.
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