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Aluminium adopts the face centred cubic lattice and its atomic mass is 27 amu. The planes...

Aluminium adopts the face centred cubic lattice and its atomic mass is 27 amu. The planes of aluminium diffract Cu K alpha radiation (lamba = 0.15418 nm) at a Bragg angle of 19.25 degrees. Calculate the density in g. cm^3. (Hint: What is the integer number of atoms represented inside the volume of the unit cell?)

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