19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
Xenon crystallises in the fcc lattice and the edge of the unit cell is 620 pm. The nearest neighbour distance of Xe is
In ccp arrangement the pattern of successive layers can be designated as
An element (atomic mass = 100 g/mol) having bcc structure has unit cell edge 400 pm. Then density of the element is
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
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?
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
Bravais lattices are of
In hcp arrangement, the number of nearest neighbours are
Crystals can be classified into basic crystal habits equal to
The number of atoms or molecules contained in one body centered cubic unit cell is
Glass 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?
Which one of the following is a molecular crystal?
The property of crystalline solid is not
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.
The two dimensional coordination number of a molecule in square close packed layer is
Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are [NEET 2021]
The correct option for the number of body centred cubic unit cells in all 14 types of Bravais lattice unit cells is: [NEET 2021]
Which type of defect present in NaCl ? (JIPMER 2019)
The tetrahedral voids present in 0.5 mole of hcp crystal structure are (AIIMS 2019) (a) 3.6 10 x (b) 9 10 x (c) 3.6 10 x (d) 6.02 10 x
Formula of nickel oxide with metal deficiency defect in its crystal is Ni0.98O. The crystal contains Ni2+ and Ni3+. ions. The fraction of nickel existing as Ni2+ ions in the crystal is (NEET (Odisha) 2019)