Question

3. A unit cell is the ...... building unit of crystal.
(a) smallest (b) largest
(c) greatest (d) single​

Answer 1

Answer:

the answer is 'Smallest'

Explanation:

The smallest building block of a crystal, consisting of atoms, ions, or molecules, whose geometric arrangement defines a crystal's characteristic symmetry and whose repetition in space produces a crystal lattice.

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Answer 2

Answer:

A unit cell is the smallest building unit of the crystal.

Therefore, the option (a) is correct.

Explanation:

• A unit cell is the smallest entity of a crystal lattice which when repeated again and again in all possible directions result in formation of crystal lattice.
• There are two types of unit cell:

1. Primitive unit cell : The lattice points in primitive unit cell are only present at the corners. The total number of lattice point  is equal to eight.
2. Non-primitive unit cell: The lattice points in non-primitive unit cell are present not only on the corners but also some other specific positions.