An ion is an atom or molecule with an electric charge. the table below list some ions and their electric charges. select all the pairs of ions that, when combined, create an ionic compound with an electric charge of 0.

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

The answer to this question is & 17.50