19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
Sodium metal crystallizes as a body centred cubic lattice with the cell edge 4.29Å. What is the radius of sodium atom.
Packing efficiency of simple cubic lattice is …A… Here, A refers to
The correct order of the packing efficiency in different types of unit cell is …A… Here, A refers to
Contribution of each atom per unit cell at face centre in a fcc unit cell is
What is the coordination number of body centre cubic lattice?
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
In hcp arrangement, the number of nearest neighbours are
The number of atoms or molecules contained in one body centered cubic unit cell is
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
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
A particular solid is very hard and has a high melting point. In solid state, it is a non-conductor and its melt is a conductor of electricity. Classify the solid.
Bravais lattices are of
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
Crystals can be classified into basic crystal habits equal to
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
Which of the following is an example of ionic crystal solid
NaCl is an example of
Particles of quartz are packed by
Which of the following is an example of covalent crystal solid