the nucleus of the atom is unstable and can break apart,emitting ionising radiation in the form of alpha beta or gamma radiation
1 of 6
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.
2 of 6
what is radioactive activity's unit
the bq. 1 bq-1 radioactive decay per second.
3 of 6
name some medical uses with radioactivity
radio-imaging,radiotherapy,leak detection,thickness control,sterilising to kill bacteria
4 of 6
what is the half life?
the length of time it takes for half the atoms in the sample to decay
5 of 6
why is radioactive decay useful for medical uses
bc of the characteristics of the different form of radioactive decay
6 of 6
Other cards in this set
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.
Comments
No comments have yet been made