The criss-cross method switches the absolute value of the oxidation number of each ion to the subscript of the other.
PO4-3 and BA+2 becomes (PO4)2(BA)3
Chris A.
asked • 01/22/18Don't understand the "Criss Cross Method for Predicting Formulas", can someone help?
I especially don't understand the crossing between PO₄⁻³ and Ba⁺², can someone please help?
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David W.
01/22/18