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A molecule A(2)B (mol. wt 166.4) occupie...

A molecule `A_(2)B` (mol. wt 166.4) occupies triclinic lattice with a `a=5Å, b=8Å and c = 4Å.` If density of `AB_(2)` is `5.2 g cm^(-3)`, calculate the number of molecules present in one unit cell 

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The correct Answer is:
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`d=(Zm)/(a^(3)N)rArr 5.2=(Zxx166.4)/(5xx8xx4xx10^(-24)xx6xx10^(23)),z=3`
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