Electrons configure into energy levels in the way that will provide the greatest stability. t or f

- 3. and

Explanations:- An empirical formula is the simplest whole number ratio of the moles of atoms present in the compound.

If we simplify the first par formula then they becomes and CH. This pair does not share the same empirical formula.

Second pair formulas are already simple and could not be further simplify. Since they are different, it is also not the right option.

Fourth pair has CH and . could be simplify to . The two formulas are still different and so it is not the right choice.

The only correct one is third pair as one of them is and other one is could be simplify to . This pair share the same empirical formula, .