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The unit cell with parameter alpha=beta=...

The unit cell with parameter `alpha=beta=gamma=90^(@) and a=b ne c` is

A

cubic

B

triclinic

C

hexagonal

D

tetragonal

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The unit cell with dimensions a =` b ne c , alpha = beta =gamma =90 `is tetragonal.
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if a=b ne c and alpha=beta=gamma=90^(@) , the crystal system is

The regular three dimensional arrangement of points in a crystal is known as crystal lattice and the smallest repeating pattern in the lattice is called unit cell. The unit cells are characterised by the edge lengths a, b, c and the angles between them alpha, beta and gamma respectively. Based on this, there are seven crystal systems. In a cubic unit cell: a=b=c and alpha = beta=gamma=90^(@) The number of points in simple, body centred and face centred cubic cells are 1,2 and 4 respectively In both the hcp and ccp of spheres, the number of tetrahedral voids per sphere is two while the octahedral voids is one. In a face centred cubic cell, an atom at the face contributes to the unit cell

The regular three dimensional arrangement of points in a crystal is known as crystal lattice and the smallest repeating pattern in the lattice is called unit cell. The unit cells are characterised by the edge lengths a, b, c and the angles between them alpha, beta and gamma respectively. Based on this, there are seven crystal systems. In a cubic unit cell: a=b=c and alpha = beta=gamma=90^(@) The number of points in simple, body centred and face centred cubic cells are 1,2 and 4 respectively In both the hcp and ccp of spheres, the number of tetrahedral voids per sphere is two while the octahedral voids is one. The C.N of cation occuppying an octahedral vois is:

The regular three dimensional arrangement of points in a crystal is known as crystal lattice and the smallest repeating pattern in the lattice is called unit cell. The unit cells are characterised by the edge lengths a, b, c and the angles between them alpha, beta and gamma respectively. Based on this, there are seven crystal systems. In a cubic unit cell: a=b=c and alpha = beta=gamma=90^(@) The number of points in simple, body centred and face centred cubic cells are 1,2 and 4 respectively In both the hcp and ccp of spheres, the number of tetrahedral voids per sphere is two while the octahedral voids is one. A double triangular void surrounded by three spheres above and three spheres below is called

The unit cell with crystallographic dimensions, a ne b ne c, alpha =gamma=90^(@) and beta ne 90^(@) is :

The following diagram shows the arrangement of lattice points with a = b = c and alpha = beta = gamma = 90^(@) . Choose the correct options.

Example of unit cell with crystallographic dimensions a!=b!=c, alpha=beta=gamma=90^(@) is :

The crystal system for which a!= b!= c and alpha = beta = gamma = 90^(@) is said to be

Example of unit cell with crystallographic dimensions anebnec,alpha=gamma=90^(@),betane90^(@) is

The equations of the line through the point (alpha, beta, gamma) and equally inclined to the axes are (A) x-alpha=y-beta=z-gamma (B) (x-1)/alpha=(y-1)/beta=(z-1)/gamma (C) x/alpha=y/beta=z/gamma (D) none of these

VMC MODULES ENGLISH-THE SOLID STATE-LEVEL-1
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  8. The axial angles in triclinic crystal system are

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  9. How many kinds of space lattices are possible in a crystal?

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