Question

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

Answer 1

An atom lying at the corner of a unit cell is shared equally by eight atoms.

• The cubic unit cell is the smallest repeating unit when all angles are 90 degrees and all lengths are equal.
• The simple cubic unit cell is delineated by eight atoms, which mark the actual cube.
• These are corner atoms, so each one only contributes one-eighth of an atom to the unit cell, thus giving us only one net atom.