Chemistry - Ions and subatomic particles

[Edin_Dzeko]

Homework Statement

19F-
p+ = ?
n = 10
e- = ?
Mass number = ?

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

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

Homework Equations

Are these (answers below in italics) correct?

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

 

[FeDeX_LaTeX]

Hi,

Yes, that looks correct to me.