For the compound formed to be neutral, the charge should be zero. This means that the positive charge should be equal to the negative charge. The balanced chemical reaction forming the neutral chromium oxide is shown below. 2Cr3+ + 3O2- ---> Cr2O3
That makes the Earth, the Sun, and the rest of the solar system <span>something like 23 thousand times as old as the human species ! </span><span> </span>
