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A compound AB has a rock salt type struc...

A compound AB has a rock salt type structure with `A:B=1:1`. The formula weight of AB is 6.023y grams and the closest `A-B` distance is `y^(1//3) Å`. If the density of lattice is 'x' g/cc then x is  

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The correct Answer is:
5
In `NaCl, 4NaCl` with are present and `A-B` distance `=(a)/(2)=y^((1)/(3)),a=2y^((1)/(3)),d=(Zm)/(a^(3)N)rArr (4xx6.023y)/(6xx10^(23)xx2y^((1)/(3)))=5`
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