Calcium (Ca) has two valence electrons and bromine (Br) has seven valence electrons. What is the chemical formula of calcium bromide, the product of a chemical reaction of calcium and bromide? (1 point) Ca_7Br_2 Ca_2Br_7 CaBr CaBr_2

Answer 1

The correct chemical formula of calcium bromide is CaBr₂.

In this compound, calcium, which has two valence electrons, donates one electron to each of the two bromine atoms, which each have seven valence electrons. This results in a stable electron configuration for both elements. Therefore, the formula is written as CaBr₂, indicating that one calcium atom combines with two bromine atoms.