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| 1. |
NaCl and CsCl have similar formula. Then why they have different structures ? |
| Answer» Solution :The radius ratio of NaCl `(r_(Na^+)//r_(Cl^-))` LIES in the RANGE 0.414 -0.732. HENCE , it has a coordination number of 6, i.e., octahedral arrangement . On the other HAND, the radius ratio of CsCl `(r_(CS^+)//r_(Cl^-))` lies in the range 0.732-1.0 . Hence, it has a coordination number of 8, i.e., it has a body-centred cubic arrangement. | |