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Suggest the probable structures of the u...

Suggest the probable structures of the unit cells of the following each compound with the help of given data
`|{:(,,"Cationic radius","Anionic radius",),((a),RbBe,1.04Å,1.95Å,),((b),MeTe,0.65Å,2.21Å,),((c),MgO,0.65Å,1.40Å,),((d),BaO,1.35Å,1.40Å,):}|`

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The correct Answer is:
(a) CsCl type (b) ZnS type (c) NaCl type (d) CsCl type
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RESONANCE-SOLID STATE-Exercise -1
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