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Homework Help: Chemistry - Ions and subatomic particles

  1. Jul 23, 2011 #1
    1. The problem statement, all variables and given/known data
    19F-
    p+ = ?
    n = 10
    e- = ?
    Mass number = ?

    ----------------

    137Ba2+
    p+ = ?
    n = ?
    e- =?

    2. Relevant equations
    Are these (answers below in italics) correct?


    3. The attempt at a solution
    19F-
    p+ = 9
    n = 10
    e- = 10
    Mass number = 19

    137Ba2+
    p+ = 56
    n = 81
    e- = 54
    Mass number = 137
     
    Last edited: Jul 23, 2011
  2. jcsd
  3. Jul 23, 2011 #2

    FeDeX_LaTeX

    User Avatar
    Gold Member

    Hi,

    Yes, that looks correct to me.
     
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