physics-radioactive decay

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what is meant by an atom being radioactive?
the nucleus of the atom is unstable and can break apart,emitting ionising radiation in the form of alpha beta or gamma radiation
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explain stability of the nucleus for some isotopes
can have too few or too many neutrons causing an imbalance+making nucleus unstable+radioactive.EG the lead isotope Pb-214 has 132 neutrons and is a beta emitter. Nucleus becomes more stable by emitting alpha or beta particles.
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what is radioactive activity's unit
the bq. 1 bq-1 radioactive decay per second.
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name some medical uses with radioactivity
radio-imaging,radiotherapy,leak detection,thickness control,sterilising to kill bacteria
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what is the half life?
the length of time it takes for half the atoms in the sample to decay
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why is radioactive decay useful for medical uses
bc of the characteristics of the different form of radioactive decay
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Card 2

Front

explain stability of the nucleus for some isotopes

Back

can have too few or too many neutrons causing an imbalance+making nucleus unstable+radioactive.EG the lead isotope Pb-214 has 132 neutrons and is a beta emitter. Nucleus becomes more stable by emitting alpha or beta particles.

Card 3

Front

what is radioactive activity's unit

Back

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Card 4

Front

name some medical uses with radioactivity

Back

Preview of the front of card 4

Card 5

Front

what is the half life?

Back

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