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    Determining radius of an atom, packing efficiency and molar mass

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    You are the Science Office on the Starship Enterprise. While surveying an uninhabited planet, you find a new mineral containing only one element. X-ray analysis demonstrates that this mineral has a face-centered-cubic arrangement of atoms and an edge of the unit cell of 565.685 pm. The density of this mineral is found to be 11.008 g/mL. Determine the radius of an atom, packing efficiency, and molar mass of this mineral.

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    https://brainmass.com/chemistry/stoichiometry/determining-radius-atom-packing-efficiency-molar-mass-516716

    Solution Preview

    Radius of fcc is given by a = 4r / (2)^0.5 where a is the edge in nm. Hence r = 0.1999 nm

    Packing efficiency of fcc ...

    Solution Summary

    The solution determines radius of an atom, packing efficiency and molar mass.

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