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16 May, 04:11

Name three radioactive elements

Name three uses of radiation

Deuterium is an isotope of hydrogen. What is meant by isotope?

Pair the following types of radioactive particle:

Light particle, helium nucleus, electron

Alpha, beta, gamma

Describe with an example what is meant by "half-life"

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  1. 16 May, 04:35
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    Technetium (TC) - Transition metal. Promethium (Pm) - Rare earth metal. Polonium (Po) - Metalliod.

    Radioactivity tracers, fission products, controls fission reactions

    Isotopes are variants of a particular chemical element which differ in neutron number. All isotopes of a given element have the same number of protons in each atom.

    For example, the half-life of a radioactive substance is the amount of time it takes for half of its atoms to decay, and the half-life of a drug is the amount of time it takes before half of the active elements are either eliminated or broken down by the body.
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