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The simplest unit of three dimensional a...

The simplest unit of three dimensional arrangement of lattice points which sets the pattern for whole lattice is callled

A

Space lattice

B

Simple lattice

C

Unit cell

D

Crystal lattice

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The correct Answer is:
C
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Give the significance of "lattice point."

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 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:

How many three dimensional lattices are possible ?

The effective number of lattice points per unit cell

AAKASH INSTITUTE-THE SOLID STATE -ASSIGNMENT SECTION-A (OBJECTIVE)
  1. The coordination number of a metal crystallizing in a hexagonal close-...

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  2. In a face centred cubic lattice unit cell is shared equally by how man...

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  3. The simplest unit of three dimensional arrangement of lattice points w...

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  4. The crystal system of a compound with unit cell dimensions a=0.387,b=0...

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  5. If 'Z' is the number of atoms in the unit cell that represents the cl...

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  6. In an ionic compound XY(2)O(4) oxide ions are arranged in ccp. Cations...

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  7. If the number of atoms per unit in a crystal is 2, the structure of cr...

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  8. Which of the following is ferromagnetic compound ?

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  9. The volume of atom present in a face-centred cubic unit cell of a meta...

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  10. The intermetallic compound LiAg crystallizes in cubic lattice in which...

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  11. The ratio of closed packed atoms to tetrahedral holes in cubic close p...

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  12. Na and Mg crystallize in bcc- and fcc-type crystals, respectively, the...

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  13. The edge of unit of FC C Xe crystal is 620 pm .The radius of Xe atom i...

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  14. The number of atoms in 100 g an fcc crystal with density d = 10 g//cm^...

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  15. The interatomic distance for bcc crystal is

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  16. The cubic unit cell of a metal (molar mass= 63.55 "mol"^(-1)) has an e...

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  17. CsBr crystallises in a body- centred cubic lattice. The unit cell leng...

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  18. In the crystals of which of the following ionic compounds would you ex...

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  19. Lithium metal crystallizes in a body centred cubic crystals. If the le...

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  20. Coordinating number of Na^(+) in NaCl is

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