Saturday, 7 May 2016

7.7 understand how to complete balanced nuclear equations

To do this all you need to know is the atomic and mass numbers of the original isotope, and the atomic/mass numbers of the particle/ray being emitted (these can both easily be worked out). You then put them in an equation... it is best to demonstrate with a few pictures...

 Alpha radiation...
alpha-example1
(the He part is the alpha particle)

Beta radiation...
beta-example1
(the e part is the beta particle)

Gamma radiation...
tcdecay
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2 comments:

  1. azNK24 April 2018 at 07:11

    I don't understand the last part with the gamma rays.
    What does the 'm' in "99m" represent and whys isn't there anymore after the gamma ray has been emitted.

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    1. Millie24 April 2018 at 08:45

      Hi!! Sorry I didn’t put up a very clear picture of gamma radiation (will add a better one when I get home). 99m is just an isotope of Tc. We don’t need to know what it stands for - all that is important is that we realise that with gamma radiation we don’t lose any protons or neutrons (as apposed to with alpha and beta radiation).

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