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 …
Packing efficiency of simple cubic lattice is …A… Here, A refers to
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
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
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
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
Which of the following is an example of metallic crystal 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
Doping of silicon (Si) with boron (B) leads to
Crystalline solid is
Which of the following is a pseudo solid
The property of crystalline solid is not
Which of the following has the highest value of energy gap?
Crystals can be classified into basic crystal habits equal to
Potassium has a bcc structure with nearest neighbour distance 4.52 Å. Its atomic weight is 39. Its density will be
For tetrahedral coordination the radius ratio r r should be
The ratio of cationic radius to anionic radius in an ionic crystal is greater than 0.732. Its coordination number is
The total volume of atoms present in face-centred cubic unit cell of a metal is (r is atomic radius) (a) r (b) r (c) r (d) r