First Five for January 19 and 20

Identify each of the following isotopes by the name – mass # format:

  1.      8 protons, 9 neutrons, 8 electrons

  2.      80 protons, 120 neutrons, 80 electrons

  3.      38 protons, 46 neutrons, 38 electrons

Identify the element class to which each atom above belongs.

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Posted in Chemistry, First Five