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Explain how you can determine the atomic mass of an unknown metal if you know its mass density and the dimensions of unit cell of its crystal. |
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Answer» Solution :The RELATION between different quantities in a SOLID is given by `M=(d"xxa^(3)xxN_(A))/(z)` where M = Atomic mass of the element, d = DENSITY of the solid, a = Edge length of the unit cell `N_(A)` = Avogadro.s number, z = Number of atoms present in a unit cell Thus, KNOWING d, a, `N_(A)` and Z, we can calculate M, the atomic mass of the unknown METAL. |
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