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An ionic solid PQ crystallises in rocksaltstructure with density 4.0gm//cm^(3).If theradius of cation and anion is 83 and 167 pm respectively, then the molar mass of solid is[N_(A)=6xx10^(23)] |
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Answer» 75 gm/`CM^(3)` `DELTA=(ZxxM)/(N_(A)xxa^(3)xx10^(-30))=(4xxM)/(6.02xx10^(23)xx[500]^(3)xx10^(-30))=4` M=75.25 gm / mole |
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