Based on the Lewis or electron dot representation of the two atoms, predict the ratio of calcium to fluorine in the compound. ca. A. 31 B. 1:2 C11 D. 21

To determine the ratio of calcium to fluorine in a compound using Lewis dot structures, we need to consider the valence electrons and how these atoms achieve stable electron configurations.1. **Calcium (Ca):** Calcium is in Group 2 of the periodic table, which means it has 2 valence electrons. In order to achieve a stable electron configuration similar to the noble gases, calcium tends to lose its 2 valence electrons, forming a ion.2. **Fluorine (F):** Fluorine is in Group 17 of the periodic table, meaning it has 7 valence electrons. To achieve a stable electron configuration, fluorine tends to gain 1 electron, forming a ion.When calcium and fluorine react to form a compound, calcium will lose its 2 electrons, and each fluorine atom will gain 1 electron. Therefore, one calcium atom can provide electrons to two fluorine atoms. This results in the formation of calcium fluoride with the chemical formula .Thus, the ratio of calcium to fluorine in the compound is 1:2.