19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Total volume of atoms present in a face centred cubic unit cell of a metal is (r = radius of atom) (a) r (b) r (c) r (d) r
Number of unit cells in 4 g of X (atomic mass=40). Which crystallises in bcc pattern is (NA=Avogadro number)
Example of unit cell with crystallographic dimensions , 90º, 90º a b c 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
An element with atomic mass 100 has a bcc structrue and edge length 400 pm. The density of element is
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)
A solid has a structure in which W atoms are located at the corners of a cubic lattice. O atoms at the centre of edges and Na atom at centre of the cube. The formula for the compound is (AllMS 2018) (a) NaWO (b) NaWO …
Ag forms ccp lattice and X-ray studies show that the edge length of its unit cell is 408.6 pm. Find the density of silver. (Given that atomic mass of silver = 107.9 u)
For a solid with the following structure, the co- ordination number of the point B is
What is the coordination number of body centre cubic lattice?
In hcp arrangement, the number of nearest neighbours are
Contribution of each atom per unit cell at face centre in a fcc unit cell is
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
In ccp arrangement the pattern of successive layers can be designated as
In a crystalline solid, having formula XY2O4, oxide ions are arranged in cubic close packed lattice while, cations X are present in tetrahedral voids and cations Y are present in octahedral voids. The percentage of te…
The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class is
The number of atoms or molecules contained in one body centered cubic unit cell is
Glass is
Which one of the following is a molecular crystal?
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 property of crystalline solid is not