Question

Calcium oxide (CaO) forms when an atom of calcium loses two electrons, giving it a +2 charge and an atom of oxygen picks up two electrons, giving it a -2 charge. What is calcium oxide?. A.) An element B.) A covalently bonded compound C.)An ionically bonded compound.

Answer 1

The answer for the question above is letter "C. an ionically bonded compound." As it was already explained in this item, the bond between the atoms of calcium and oxygen to form the calcium oxide is formed through the transfer of electrons from one atom to another. 

Answer 2

its C

An ionic bonded compound as the bond is formed from a metal and a non metal plus its a strong electrostatic attraction between 2 or more elements

hope that helps