Home
Class 12
CHEMISTRY
The crystal system of a compound with un...

The crystal system of a compound with unit cell dimensions `a=0.350,b=0.350` and `c=0.500` and `alpha=beta=90^(@)` and `gamma=120^(@)`is

A

Cubic

B

Hexagonal

C

Orthorhombic

D

Rombohedral

Text Solution

Verified by Experts

The correct Answer is:
B

For crystal, if `a=b ne c, alpha = beta=90^(@), gamma =120^(@)`
it belongs to hexagonal system
Promotional Banner

Similar Questions

Explore conceptually related problems

Rhombohedral crystal system has the following unit cell dimensions :

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

Crystal systems with alpha=beta=gamma=90^(@) -

Assertion (A) : Graphite is an example of tetragonal crystal system. Reason (R ) : For a tetragonal system, a = b != c and alpha = beta = 90^(@), gamma = 120^(@) .

Identify the following unit cell: (1) a=bnec, alpha=beta=gamma=90^(@) (2) anebnec, alpha=beta=gamma=90^(@)

A unit cell having a=bnecandalpha=beta=gamma=90^(@) belongs to ______ system.

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

Identify the crystal system whose unit cell parameters are anebnecandalpha=beta=gamma=90^(@) . How many Bravais lattices are possible for this crystal system? What are they?

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