Answer
a. $Al^{+3}Cl_{3}^{-1}$ Aluminum chloride
b. $Na_{2}^{+1}O^{-2}$ Sodium oxide
c. $Sr^{+2}F_{2}^{-1}$ Strontium flouride
d. $Ca^{+2}Se^{-2}$ Calcium selenide
Work Step by Step
First, balance the charges of each ion. Then write the name of the ionic compound with the name of the cation and then the anion with a suffix of -ide.