Answer
a) Calcium Oxide
b) Copper Selenide(II)
c) Iron Sulfide
d) Iron Aluminide(III)
Work Step by Step
A) Ca stands for Calcium, and O for Oxygen. You place the cations first, Calcium, which has a charge of +2. You normally add an "ide" to the second or last element. For Oxygen, it now becomes oxide, because it has a charge of -2.
B) Use the criss cross method. What was, for example, CoI^2, becomes Cobalt(II) Iodine.
C) Look above for explanation.
D) Look above for explanation.
