Cual es la razón de que la molécula de oxigeno de calcio sea caO y no sea ca2O. o caO 2

In calcium oxide (CaO), oxygen and calcium are respectively a non-metal and a metal, whose bonding is based on the exchange of electrons to form an ionic bond, which balances their charges and makes it chemically stable.

Explanation:

What is the reason that in the calcium oxide molecule is caO and not Ca₂O or CaO₂?

Calcium is a metallic element -a soft metal- that is capable of bonding with a non-metallic element such as oxygen to form an ionic bond, so that each Ca atom will bond to a single O atom.

CaO (calcium oxide)

          Ca              +         O       ---→       Ca⁺²    +      O ⁻²

     K   L   M   N               K   L                 K  L  M        K  L

     2   8    8   2               2   6                  2  8   8       2  8

The electron exchange that is observed occurs between +atom and atom, and for this reason the chemical formula of calcium oxide is CaO.

Calcium oxide (lime) is obtained by heating calcium carbonate (CaCO₃) to very high temperatures through the following reaction

                                CaCO₃ + heat → CaO + CO₂