Question

If lattice is 3-D, then it is known ​

Answer 1

Answer:

crystal lattice

Explanation:

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Answer 2

Answer:

. In a crystal lattice there is the parallelepiped constructed from vectors which correspond to translational periods called unit cells.

2. These can be chosen in different ways. Commonly, unit cells are chosen so that its vertex coincides with one of the atoms of the crystal.

3. Then lattice sites are occupied by atoms, and of the atoms of the crystal.Thus, the lattice sites are occupied by atoms, and vectors that connect the nearest equivalent atoms.

4. The unit cell contains at least one atom of each of the types that make up the crystal.

5. Providing that the unit cell is made up of only one type of atom, it is called monatomic, anymore than that and it is polyatomic. Correspondingly a monatomic lattice is often identified as a simple lattice and a polyatomic one, a composite lattice.