1.

Match the column : {:("Column-I","Column-II"),((A)AB("Zinc blende"),(p)d(gm//cm^3)=(4xx"molar mass")/("Avogadro's number" xx "Volume of unit cell")),((B)AB("Rock salt"),(q)"All the voids along one of the body diagonal are not occupied"),(( C)AB_2("Fluorite"),(r)"Voids along one face plane are not occupied"),((D)AB_2("Anti-Fluorite"),(s)"Anion & cation have similar surroundings"),(,(t)"Cation is bigger than anion"):}

Answer»


SOLUTION :(A)AB (zinc blende ) , z=4
So, d=`("mass)/("VOLUME")=(4xxM)/(N_A a^3)`
`S^(2-)`at FC c lattice & `Zn^(2+)` occupy alternate tetrahedral voids octahedral voids are not occupied
(B)AB (ROCK salt)
Same as for NaCl
( C)`AB_2` (FLUORITE ) same as `CaF_2`
(D)`AB_2` (Antifluorite ) same as `Na_2O`


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