Question

calculate the number of particles in FCC​

Answer 1

Answer:

In a FCC lattice there rer 8 atoms at eight corners and 6 at face centers,

Now each corner contributes to eight cells so per unit cell contribution is

1/8 ×8=1 atom.

Now similarly each face center contributes to two unit cells so contribution per unit cell by six face centers is equal to 1/2 ×6=3 atoms. Hence total no. of atoms per unit cell of FCC lattice is (1+3)=4 atoms.

For BCC-

A bcc has one atom in center and 8/1 th part of 8 corner atoms i.e 1 atom.

In total there are 1+1=2 atoms.

HOPE IT HELPS YOU

MARK AS BRANLIEST

Answer 2

Answer:

In a FCC lattice there are 8 atoms at eight corners and 6at face center,

Now each corners contribute to eight cells

so per unit cell contribution is 1/8×8=1 atom

Now similarly each face center contributes to two

so contribution per unit cell by six face center is equal to 1/2×6=3 atoms.

Hence total number of atoms per unit cell of FCC lattice is (1+3)=4 atoms.

Thank u