The 2D unit cell of an element is shown. The two layers are placed one over the other and touching each other. Find the effective number of atoms in the unit cell

The 2D unit cell of an element is shown. The two layers are placed one

1.	The 2D unit cell of an element is shown. The two layers are placed one over the other and touching each other. Find the effective number of atoms in the unit cell
Answer» Solution :NUMBER of atom is 2D unit CELLS `= (1)/(3) xx 6 + 1 xx 1 = 3`