A metal crystallizes in a face-centered cubic lattice.The radius of the atom is 128 pm and the density of the element is 8.92 g/cm³.How many atoms are there per unit cell?

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Quizplus · Accepted Answer

In a face-centered cubic (FCC) lattice, there are 4 atoms per unit cell. This is because in an FCC structure, each of the 8 corners of the cube contributes 1/8th of an atom, and each of the 6 face-centered atoms contributes half an atom, totaling 4 atoms per unit cell.

A Metal Crystallizes in a Face-Centered Cubic Lattice