Question

In a face-centered cubic structure, every atom has twelve neighbors. which arrangement of balls serves as the best model for this structure? twelve balls arranged equally apart from each other around a circle eight balls at the corners of a cube eight balls at the corners of a cube, and one ball in the center of the cube eight balls at the corners of a cube, and six balls in the centers of the cube's faces description

Answer 1

The image attached below is the correct representation of a face-centered cubic unit cell model. To create this model, you have to place 6 balls in the centers of each of the cube's faces and 1 ball for every corner of the cube which sums up to 8 balls. Therefore, the answer is: eight balls at the corners of a cube, and six balls in the centers of the cube's faces.