19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
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
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?
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
Packing efficiency of simple cubic lattice is …A… Here, A refers to
The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class 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 …
The two dimensional coordination number of a molecule in square close packed layer is
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
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
An element (atomic mass = 100 g/mol) having bcc structure has unit cell edge 400 pm. Then density of the element 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
Solid CO₂ is an example of
Which of the following is a pseudo solid
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 number of atoms contained (i) in one body centred cubic unit cell and (ii) in one face centred cubic unit cell, is
Which of the following is non-crystalline solid
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
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?
The number of atoms present in unit cell of a monoatomic substance of simple cubic lattice is
The number of atoms per unit cell in primitive (sc), body-centered (bcc), face-centered (fcc) and end- centered (ecc) unit cell decreases as
In a face-centred cubic lattice, a unit cell is shared equally by how many unit cells