CsCl Crystallizes In A Cubic Lattice That Has A Cl- at Each Corner And Cs+ at The Centre Of The Unit Cell. What Is The Value Of Edge Length A Of The Cube?  

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Question

CsCl crystallizes in a cubic lattice that has a Cl- at each corner and Cs+ at the centre of the unit cell. What is the value of edge length a of the cube?  

Solution

Correct option is

4.04

 

The closest Cs+ to CI- distance = sum of the ionic radii of Cs+  and CI-

                                                         = 1.69  + 1.81

                                                         

The distance in one – half of the cubic diagonal =    

                                                                        

                                                                         

 

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