In an ionic bond, atoms transfer electrons to achieve a full outer shell.
While the Criss-Cross method is a lifesaver, it can be a trickster if you aren't paying attention. Here is where students usually get popped: writing formulas -criss-cross method-
The Criss-Cross method is a simple, four-step process used primarily for (compounds made of two distinct ions). Here is the algorithm in detail. In an ionic bond, atoms transfer electrons to