Here's the question you clicked on:
sudharajendiran
Estimate the radius of the cesium ion, Cs+. The lattice energy of cesium chloride, CsCl, is 633 kJ/mol. For CsCl, the Madelung constant M is 1.763, and the Born exponent n is 10.7. The radius of Cl− is known to be 1.81 A˚. Express your answer in Angstroms.
Hiya sudharajendiran, sorry to say but you accidentally posted in the wrong section. You'll be sure to find an answer in the chemistry section- feel free to ask your question there. This question is closed as it is in the wrong section. You can find other subjects by clicking "find more subjects" above. If you have any questions about this feel free to ask :)