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Density

28. Three ato...

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28. Three atoms A,B and C crystallize in a cubic solid lattice where A atoms are present at the body centre, B atoms are present at the edge centre as well as the corners of the cube and C atoms are present at the face centres of the cube. Now if all the atoms are removed from the two 4-fold axis and the one 2-fold axis passing through the cube,then the formula of the compound is 1)B7C2 2)AB2C7 3)ABC2 3)A5C2

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