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• Objective question in Chemistry
  An atom X is represented as follows {}_{21}^{45} ext{X} . The numbers of protons, electrons and neutrons in this atom are: a) 21, 21, 24 b) 21,21,23 c) 20,20,24 d) 20,20,23 ...
  0·3· #Chemistry
  favorited2014-05-03 07:02:44