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Why the coordination number of CsCl chan...

Why the coordination number of CsCl changes from 8 : 8 to 6 : 6 coordination?

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On heating to 760 K, CsCl changes to NaCl structure. In other words, high temperature decreases co-ordination number.
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Assertion : Coordination structure of CaCI changes from 8:8 to 6 : 6 on heating Reason: The crystal structure CaCI changed in NaCI on heating

What is the coordination number of Cs^(+) in CsCl ?

8:8 coordination of CsCl is found to change into 6:6 coordination :

Statement - I. By increasing the temperature C.N. of CsCl changes from 8 : 8 to 6 : 6. Statement - II. Temperature also influences the C.N. of solid.

Statement : 8:8 co - ordination of CsCl at low temperature changes to 6:6 co - ordinationat 760K . Explanation : Temperature also infuences the strutures of solids.

A : In NaCl coordination number of Cl^(-) ion is 6 but in CsCl coordination number of Cl^(-) ion is 8. R : Ionic radii changes with type of lattice.

6 :6 of NaCl coordination changes to 8 : 8 coordination on:

Assertion (A) : CsCl crystal, the coordination number of Cs^(o+) ion is 8 . Reason (R ) : Cl^(ɵ) ion in CsCl adopt bcc type of packing,