Question

Al, Cu, Ni crystals occur most predominantly in which of the following crystal structure (Hint: Remember your lab)?

a) Cubic
b) Tetragonal
c) Hexagonal
d) Orthorhombic

Answer 1

The crystals of aluminum (Al), copper (Cu), and nickel (Ni) occur most predominantly in a face-centered cubic (FCC) crystal structure.

Step-by-step explanation:

The crystals of aluminum (Al), copper (Cu), and nickel (Ni) occur most predominantly in a face-centered cubic (FCC) crystal structure. In this arrangement, the unit cell has atoms at all of the corners and at the centers of each face. These metals have FCC structures due to the close-packed arrangement of atoms, which maximize the packing efficiency.