Question

Which of the following is paired incorrectly?

1. unit cell - the smallest repeating unit of the lattice
2. glass - amorphous solid
3. amorphous solids - considerable disorder in their structures
4. gold metal - simple cubic unit cell
5. crystalline solids - highly regular arrangement of their components

Answer 1

The option paired incorrectly is 4. Gold metal - simple cubic unit cell. Gold metal has a face-centered cubic unit cell. A simple cubic unit cell is one of the seven types of three-dimensional crystal structures, but it's not the same as face-centered cubic unit cell.