Lewis theory predicts that the formula for a compound between fluorine and calcium is:

Question

Quizplus · Accepted Answer

According to Lewis theory, fluorine has 7 valence electrons and calcium has 2. Thus, fluorine needs 1 more electron to fill its outer shell, while calcium needs to lose 2 electrons to fill its outer shell. The compounds formed between these two elements would ideally have a 1:2 ratio of calcium to fluorine. The only option with this ratio is Choice C, CaF₂.

Lewis Theory Predicts That the Formula for a Compound Between