The designations 1A through 8A used for certain families of the periodic table are helpful for predicting the charges on ions in binary ionic compounds. In these compounds, the metals generally take on a positive charge equal to the family number, and the nonmetals take on a negative charge equal to the family number minus eight. Thus the compound formed from sodium and chlorine contains Na⁺ and Cl^– ions and has the formula NaCl. Predict the formula and the name of the binary compound formed from the following pairs of elements.

a. Ca and N

b. K and O

c. Rb and F

d. Mg and S 

e. Ba and I

f. Al and Se

g. Cs and P

h. In and Br