Question:
Tetragonal crystal system has the following unit cell dimensions
Tetragonal crystal system has the following unit cell dimensions
Updated On: Jun 7, 2022
- a = b = c, a = ? = ? = 90$^{\circ}$
- a = b ? c, a = ? = ? = 90$^{\circ}$
- a ? b ? c, a = ? = ? = 90$^{\circ}$
- a = b ? c, a = b = 90$^{\circ}$, g = 120$^{\circ}$
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
For tetragonal a = b ? c , a = ? = ? = 90$^{\circ}$
Was this answer helpful?
0
0
Top Questions on Unit Cells
- Which of the following statements is incorrect for antibiotics?
- JEE Main - 2023
- Chemistry
- Unit Cells
- Which of the following expressions is correct in case of a CSCl unit cell (edge length, a) ?
- JEE Main - 2023
- Chemistry
- Unit Cells
- The correct option for the number of body centred unit cells in all $14$ types of Bravais lattice unit cells is :
- NEET (UG) - 2021
- Chemistry
- Unit Cells
- Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are:
- NEET (UG) - 2021
- Chemistry
- Unit Cells
- The ratio of number of atoms present in a simple cubic, body centered cubic and face centered cubic structure are, respectively :
- JEE Main - 2019
- Chemistry
- Unit Cells
View More Questions
Questions Asked in JIPMER exam
- Binomial nomenclature was first introduced by
- JIPMER - 2015
- KCET - 2022
- Diversity In The Living World
- A convex lens $'A'$ of focal length $20\, cm$ and a concave lens $'B'$ of focal length $5\, cm$ are kept along the same axis with a distance $'d'$ between them. If a parallel beam of light falling on $'A'$ leaves $'B'$ as a parallel beam, then the distance $'d'$ in cm will be :
- JIPMER - 2021
- Spherical Mirrors
- A bacterial flagellum is composed of
- JIPMER - 2021
- Prokaryotic Cells
- $2,4-DNP $ test can be used to identify :
- JIPMER - 2021
- Chemical Reactions
- How many moles of acidified $K_2Cr_2O_7$ is required to liberate $6$ moles of $I_2$ from an aqueous solution of $I^-$ ?
- JIPMER - 2020
- Mole concept and Molar Masses
View More Questions
Concepts Used:
Unit Cells
The smallest portion of a crystal lattice which repeats in different directions to form the entire lattice is known as Unit cell.
The characteristics of a unit cell are:
- The dimensions are measured along the three edges, a, b and c. These edges can form different angles, they may be mutually perpendicular or may not.
- The angles held by the edges are α (between b and c) β (between a and c) and γ (between a and b).
Therefore, a unit cell is characterised by six parameters such as a, b, c and α, β, γ.
Types of Unit Cell:
Numerous unit cells together make a crystal lattice. Constituent particles like atoms, molecules are also present. Each lattice point is occupied by one such particle.
- Primitive Unit Cells: In a primitive unit cell constituent particles are present only on the corner positions of a unit cell.
- Centred Unit Cells: A centred unit cell contains one or more constituent particles which are present at positions besides the corners.
- Body-Centered Unit Cell: Such a unit cell contains one constituent particle (atom, molecule or ion) at its body-centre as well as its every corners.
- Face Centered Unit Cell: Such a unit cell contains one constituent particle present at the centre of each face, as well as its corners.
- End-Centred Unit Cells: In such a unit cell, one constituent particle is present at the centre of any two opposite faces, as well as its corners.