Question

Calculate the number of atom in simple, body centered and face centered

cubic unit cell.​

Answer 1

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★ BCC(Body Centered cubic unit cell) :→ Those unit cell in which constituent partcles are present at corners as well as on the center of the body. So,

Number of atoms on corner = 8

Number of atoms in the center = 1

$\therefore$ Total number of atoms = 9.

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★ FCC(Face Centered cubic unit cell) :→ Those unit cell in which constituent partcles are present at corners as well as on the center of each face. So,

Number of atoms on corner = 8

Number of atoms in the center = 6

$\therefore$ Total number of atoms = 14.