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Q-> Lithium chloride has a cubic structure as shown below. If the edge length is 400 pm, then the radii of Cl− ions is(A) 100 pm(B) 200 pm(C) 141.4 pm(D) 282.8 pm

Radhika Batra , 11 Years ago
Grade 11
anser 1 Answers
Amit Saxena

Last Activity: 11 Years ago

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For the cube as given, the Cl ions are at the corners and one each in the face centre i.e., it is a ccp structure.

 

 

 

        For a ccp structure, 4r =

 

                The face diagonal =

 

        On the face diagonal there are only Cl ions

 

        \      4r =

 

        or     r = 1.414 ×  400/4 = 141.4 pm

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