Question

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"

Answer 1

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.