Question

the number of atoms or molecule present in primitive cell is

Answer 1

YOUR ANSWER....
This topic briefly explains about the number of atoms in a unit cell and the types of unit cell. Large number of unit cells together make a crystal lattice. Constituent particles like atoms, moleculesare also present. Each lattice point is occupied by one such particle
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Answer 2

either 1 atom or 1 molecule can be there in a primitive unit cell