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In any cubic lattice, an atom lying at the corner of a unit cell is shared equally by how many unit cells?

In any cubic lattice, an atom lying at the corner of a unit cell is shared equally by how many unit cells? Correct Answer Eight

An atom at the corner of the cube is shared by eight adjacent cubes, and thus makes 1/8 contribution to any one cell. Similarly, the center of an edge is common to four other cells, and an atom centered in a face is shared with two cells.

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