19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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 unit cell of aluminium is a cube with an edge length of 405 pm. The density of aluminium is 2.70 g cm –3. What is the structure of unit cell of aluminium?
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
In a face centred cubic arrangement of A and B atoms when A atoms are at the corner of the unit cell and B atoms of the face centres. One of the A atom is missing from one corner in unit cell. The simplest formula of …
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
Packing efficiency of simple cubic lattice is …A… Here, A refers to
An alloy of Cu, Ag and Au is found to have copper constituting the ccp lattice. If silver atoms occupy the edge centre and gold is present at body centre, the alloy has a formula
How many lithium atoms are present in a unit cell with edge length 3.5 Å and density 0.53 gcm –3? (Atomic mass of Li = 6.94)
Copper crystallises in face centred cubic lattice with a edge length of 361pm. What is the radius of copper atom in pm?
A metal crystallizes in a face-centered unit cell. Its edge length is 0.410 nm. The radius of the metal is
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
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
The property of crystalline solid is not
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
Crystals can be classified into basic crystal habits equal to
The two dimensional coordination number of a molecule in square close packed layer is
Which of the following is non-crystalline solid
Which of the following is a pseudo solid
Solid CO₂ is an example of
In ccp arrangement the pattern of successive layers can be designated as
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 intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class is
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
Which of the following statements is not true about NaCl structure