The mass of a face-centered cubic unit cell is
A)Two times the mass of one atom.
B)Five times the mass of one atom.
C)Equal to the mass of one atom.
D)Six times the mass of one atom.
E)Four times the mass of one atom.

Question

Quizplus · Accepted Answer

A face-centered cubic unit cell contains 4 atoms, each located at the corners of a tetrahedron and centered on the faces of the cube. The mass of the unit cell is equal to the sum of the masses of the atoms in the cell, which in this case is 4 times the mass of one atom. Therefore, the mass of a face-centered cubic unit cell is four times the mass of one atom.

The Mass of a Face-Centered Cubic Unit Cell Is