Formula for Cd2+ and PO43- ? also whats its name

please help

1 Answer
Feb 4, 2018

Answer:

The chemical formula is #"Cd"_3("PO"_4)_2#, and its name is cadmium phosphate.

Explanation:

#"Cd"^(2+)# is the cadmium 2+ ion, and #"PO"_4"^(3-)# is the phosphate 3- ion.

To determine the formula, mentally criss cross the size of each charge, so that the size of the charge on the cadmium ion becomes the subscript for the phosphate ion, and the size of the charge on the phosphate ion becomes the charge on the cadmium ion.

#"Cd"_3("PO"_4)_2#

This ionic compound is named cadmium phosphate.