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
The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class 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
The two dimensional coordination number of a molecule in square close packed layer is
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
Tetragonal crystal system has the following unit cell dimensions
Crystals can be classified into basic crystal habits equal to
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
Solid CO₂ is an example of
Which of the following is a pseudo solid
Which of the following is non-crystalline solid
Which of the following is an example of ionic crystal solid
Diamond is an example of
NaCl is an example of
Which of the following is an example of metallic crystal solid
Which of the following is an example of covalent crystal solid
The correct order of the packing efficiency in different types of unit cell is …A… Here, A refers to
The maximum proportion of available volume that can be filled by hard spheres in diamond is
Assuming the metal atom to be spherical and crystallizes in fcc lattice with edge length 407 pm, its radius will be
A metal crystallises into a lattice containing a sequence of layer as AB ABAB....... . What percentage of voids are left in the lattice?
A face-centred cubic element (atomic mass 60) has a cell edge of 400 pm. What is its density?
Number of atoms in the unit cell of Na (bcc type crystal) and Mg (fcc type crystal) are, respectively