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

c- an ionically bonded compound, since it forms by Ca losing electrons and O gaing electrons it is an ionic compound.
an ionic compound is a compound formed by different charged elements that lose or gain electrons, hope that helped :)