What is unit cell short definition?

: the simplest polyhedron that embodies all the structural characteristics of and by indefinite repetition makes up the lattice of a crystal.

What is unit cell in chemistry class 12?

CBSE Class 12th Chemistry : The smallest group of atoms or molecules, whose repetition at regular intervals in three dimensions produces a crystal, is called as a Unit cell. Hence, a unit cell is the smallest portion of a crystal lattice which, when repeated in different directions, generates the entire lattice.

What is a unit cell called?

A 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. When the unit cell repeats itself, the network is called a lattice.

What are the two types of unit cell?

Types of Unit Cell: There are two types of unit cells – Primitive and Centred Unit Cells. Primitive Unit Cells: When particles in unit cell are present only at the corners, it is called the primitive unit cell.

What is unit cell parameter?

Unit Cell Parameters. There are six parameters of a unit cell. These are the 3 edges which are a, b, c and the angles between the edges which are α, β, γ. The edges of a unit cell may be or may not be perpendicular to each other.

What is a Si in chemistry?

Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, and lead are below it.

What is cellular chemistry?

The chemistry of cells is essentially the chemistry of carbon containing compounds, because the carbon atom has unique properties that make it especially suitable as the backbone of biologically important molecules. To study cellular compounds really means to study compounds containing carbon.