Question

Define:
(a) crystal lattice
(b) unit cell​

Answer 1

Answer:

crystal lattice

the symmetrical three-deminsional arrangement of atoms inside a crystal

unit cell

A unit cell is the smallest portion of a crystal lattice that shows the three-dimensional pattern of the entire crystal. A crystal can be thought of as the same unit cell repeated over and over in three dimensions.

Answer 2

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Define :

(a) crystal lattice

(b) unit cell

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Crystal lattice :

The crystal lattice is the symmetrical three-dimensional structural arrangements of atoms, ions or molecules (constituent particle) inside a crystalline solid as points. 

Unit cell :

 unit cell is the most basic and least volume consuming repeating structure of any solid. It is used to visually simplify the crystalline patterns solids arrange themselves in. 

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