19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class 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
An element has a body-centred cubic (bcc) structures with a cell edge of 444 pm. The density of the element is 7.2 g/cm3. How many atoms are present in 404 g of the element?
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
The number of atoms contained (i) in one body centred cubic unit cell and (ii) in one face centred cubic unit cell, is
The two dimensional coordination number of a molecule in square close packed layer is
Crystals can be classified into basic crystal habits equal to
The property of crystalline solid is not
Tetragonal crystal system has the following unit cell dimensions
In ccp arrangement the pattern of successive layers can be designated as
Solid CO₂ is an example of
Which of the following is a pseudo solid
Which of the following is an example of metallic crystal solid
Crystalline solid is
Doping of silicon (Si) with boron (B) leads to
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 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
Sodium metal crystallizes as a body centred cubic lattice with the cell edge 4.29Å. What is the radius of sodium atom.
Which of the following has the highest value of energy gap?
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
Potassium has a bcc structure with nearest neighbour distance 4.52 Å. Its atomic weight is 39. Its density will be
The number of atoms in 100 g of an FCC crystal with density d = 10 g cm –3 and cell edge as 200 pm is equal to