Final answer:
The formula of the compound formed when cesium chloride crystallizes with chloride ions at the corners and a cesium ion in the center is CsCl, which has a 1:1 stoichiometry.
Step-by-step explanation:
The compound formed by cesium chloride crystallizing in a cubic unit cell, with the chloride ions at the corners and a cesium ion at the center, has the formula CsCl. This is because each unit cell contains one cesium ion and one chloride ion, establishing a 1:1 stoichiometry.
In the cesium chloride structure, the coordination number for both Cs+ and Cl- is 8. This is because each Cs+ ion is surrounded by 8 Cl- ions, and vice versa.
Despite the chloride ions being positioned at the corners of the cube and the cesium ion in the center, this does not constitute a body-centered cubic (BCC) lattice, because the ions involved are not identical to each other.