Question

the chemical formula for calcium chloride is
a. cacl3
b. cacl
c. ca2cl
d. ca2cl3

Explanation:

Calcium has a +2 charge (\(Ca^{2+}\)) and chloride has a -1 charge (\(Cl^{-}\)). To form a neutral compound, the charges must balance. Using the criss - cross method (swap the magnitudes of the charges as subscripts), we get \(CaCl_{2}\).

Answer:

A. \(CaCl_{2}\)