How many atoms of each element are in #3CaCl_2#?

1 Answer
anor277
Aug 25, 2017

Each individual formula unit of #CaCl_2# contains #1xxCa^(2+)#, and #2xxCl^-#.

Explanation:

The ionic salt formed is of course electrically neutral; and electrical neutrality requires this PRECISE number of anions and cations. So if we got 3 formula units or even 3 moles, we gots #3xxCa^(2+)+6xxCl^-#.....

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