Question

What is the name of the binary compound that has the formula CaO?
A. calcium oxide
B. calcium oxalate
C. calcium peroxide
D. calcium peroxalate

Answer 1

♥  calcium oxide is the name of the binary compound that has the formula CaO
Final answer: A

Answer 2

CaO is the formula of the compound, now, we need to find the name.

To find the name is very simple.

Ca is what element? It is calcium. 
O is what element? It is oxygen, but in compound form, it is oxide.

Answer:  calcium oxide.