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
Sodium metal crystallizes as a body centred cubic lattice with the cell edge 4.29Å. What is the radius of sodium atom.
In ccp arrangement the pattern of successive layers can be designated as
If the coordination number of Ca²⁺ in CaF₂ is 8, then the coordination number of F– ion would be
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
Tetragonal crystal system has the following unit cell dimensions
In NaCl lattice the radius ratio is Na Cl r r =
The number of atoms contained (i) in one body centred cubic unit cell and (ii) in one face centred cubic unit cell, is
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
The interionic distance for caesium chloride crystal will be
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
The number of atoms per unit cell in primitive (sc), body-centered (bcc), face-centered (fcc) and end- centered (ecc) unit cell decreases as
Which of the following is a pseudo solid
Which of the following is non-crystalline solid
Solid CO₂ is an example of
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
The property of crystalline solid is not
Which defect causes decrease in the density of crystal
Crystals can be classified into basic crystal habits equal to
In a face-centred cubic lattice, a unit cell is shared equally by how many unit cells
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
Which kind of defect is shown by the given crystal?
A solid is formed by two elements P and Q. The element Q forms cubic close packing and atoms of P occupy one third of tetrahedral voids. The formula of the compound is [AMU 2010]