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OpenStudy (maleni.hrera):
How many protons are in the radioactive isotope ? 40 19 21 20
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OpenStudy (irishboy123):
|dw:1479398376339:dw| which element?
OpenStudy (osprey):
indeed - WHICH element ?
OpenStudy (irishboy123):
That was from the Beeb website They should be showing the cricket :-|
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