19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
In a cubic structure of compound which is made from X and Y, where X atoms are at the corners of the cube and Y at the face centres of the cube. The molecular formula of the compound is
A compound is formed by elements A and B. This crystallizes in the cubic structure when atoms A are the corners of the cube and atoms B are at the centre of the body. The simplest formula of the compound is
The number of atoms per unit cell of bcc structure is [Kerala CEE 2009]
A metal has bcc structure and the edge length of its unit cell is 3.04Å. The volume of the unit cell in cm will be
Aluminium has fcc structure. The length of the unit cell is 404 pm. If the density of the metal is 2.7 g cm–3, the molar mass of Al atom is
In ccp arrangement the pattern of successive layers can be designated as
The two dimensional coordination number of a molecule in square close packed layer is
The formula for determination of density of unit cell is (a) a N g cm N M A x x (b) M g cm a N A Z x x (c) a M g cm N N A x x (d) M N g cm a N A x x
The number of atoms contained (i) in one body centred cubic unit cell and (ii) in one face centred cubic unit cell, is
Tetragonal crystal system has the following unit cell dimensions
Number of unit cells in 4 g of X (atomic mass = 40) which crystallises in bcc pattern is (NA = Avogadro's number) (OJEE 2010) (a) A 0.1N (c) A 2 0.1N x (b) A 0.1N (d) A N x
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class is
Given, Column A Column B A. Ionic solid I. NaCl B. Metallic solid II. Fe C. Covalent solid III. C(graphite) D. Molecular solid IV. Dry ice
Structure of a mixed oxide is cubic close packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are o…
Solid CO₂ is an example of
The property of crystalline solid is not
Which of the following is a pseudo solid
If a is the length of the side of a cube, the distance between the body centered atom and one corner atom in the cube will be (AIPMT 2014)
Crystals can be classified into basic crystal habits equal to
Packing efficiency of simple cubic lattice is …A… Here, A refers to
An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centres of the faces of the cube. The empirical formula for this compounds would be
A metal crystallizes in a face-centered unit cell. Its edge length is 0.410 nm. The radius of the metal is
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
The tetrahedral voids present in 0.5 mole of hcp crystal structure are (AIIMS 2019) (a) 3.6 10 x (b) 9 10 x (c) 3.6 10 x (d) 6.02 10 x