Fluorine 20 is radioactive and Na 23 is not
None of the reasons listed apply. F-20 just has more neutrons than the nucleus "needs"
Pick the radioactive isotope in each set
23/11 na
or
20/9 f
explain why
a)its atomic number is greater than 83
b)it has fewer n than p in the nucleus
c)it is an odd-odd nuclide
none of the above
1 answer