9 Questions
What is the main characteristic of crystalline solids?
Regular and repeating pattern of constituent particles
How many possible 3D lattices are there called Bravis Lattices?
14
What is each point in the crystal lattice called?
Lattice point/lattice site
Which type of unit cell contains constituent particles only at the corner positions?
Primitive unit cell
What is the smallest portion of a crystal lattice that generates the entire lattice when repeated in different directions?
Unit Cell
In a face-centered unit cell, where are the constituent particles located?
At the center of each face
What angles characterize a unit cell?
$\alpha$, $\beta$, and $\gamma$
What type of unit cell has one constituent particle at the center of each face?
Face-centered unit cell
How are lattice points connected?
By lines
Study Notes
Crystalline Solids
- The main characteristic of crystalline solids is their three-dimensional arrangement of particles in a regular and periodic pattern.
Bravais Lattices
- There are 14 possible 3D lattices, known as Bravais Lattices.
Crystal Lattice
- Each point in the crystal lattice is called a lattice point.
Unit Cells
- A primitive unit cell contains constituent particles only at the corner positions.
- The smallest portion of a crystal lattice that generates the entire lattice when repeated in different directions is called a unit cell.
Face-Centered Unit Cell
- In a face-centered unit cell, the constituent particles are located at the center of each face in addition to the corners.
Unit Cell Angles
- A unit cell is characterized by three axes (a, b, and c) and three angles (α, β, and γ) between them.
Unit Cell Types
- A face-centered unit cell has one constituent particle at the center of each face.
Lattice Points
- Lattice points are connected in a three-dimensional pattern to form a crystal lattice.
Discover the main characteristics of crystalline solids, including the regular and repeating pattern of constituent particles and the concept of crystal lattices. Learn about the 14 possible 3D lattices known as Bravis Lattices and the characteristics of crystal lattice points.
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