A compound formed between calcium, titanium, and oxygen crystallizes in the perovskite structure shown below. Ca2+ cations (white circles) reside on the corners of the unit cell, the Ti4+ cation (black circle) resides in the body center of the cubic cell, and O2- anions (gray circles) reside on each of the cell faces. I know from the figure that there is 1 Ca atom, 1 Ti atom, and 3 O atoms. What is the formula of the compound? Write the elements in the order Ca, Ti, O.
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(CaTiO3)