Question

The three dimensional graph of lattice points which sets the pattern for whole lattice is called:
A) Space lattice
B) Simple lattice
C) Unit cell
D) Crystal lattice

Answer 1

We have to know that a lattice is an ordered arrangement of points that describes the arrangement of particles which forms a crystal structure. Lattice points join together to form a unit cell. A crystal structure is derived from atoms, molecules arranged in a crystal space.

Complete answer:
To solve this question we must have knowledge about crystal structure. A crystal structure is derived from atoms, molecules arranged in a crystal space. The smallest group of particles that is formed by repeating the pattern of a particular arrangement is called unit cell. Now we look at all the other options to answer this question.
Option A) this option is incorrect as the space lattice is a three dimensional arrangement of points in a space.
Option B) This option is incorrect as there is nothing like a simple lattice; it's the simple cubic lattice that has one lattice point at the corner of the unit cell.
Option C) this is a correct option as the smallest repeating unit that holds atoms and molecules is called unit cell and the three dimensional graph of lattice points which sets the pattern for the whole lattice is called unit cell. It is the smallest portion that shows the three dimensional pattern for the lattice.
Option D) this is an incorrect option as the crystal lattice is the ordered three dimensional arrangement of atoms, molecules inside a crystalline solid.

Note:
We have to know that there are a total seven crystal systems out of which cubic is the simplest and known as a primitive unit cell. In a simple cubic lattice there is one lattice point at each corner of the unit cell. It is the simplest crystal system in which all lattice points are arranged at the corners only.