19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Potassium has a bcc structure with nearest neighbour distance 4.52 Å. Its atomic weight is 39. Its density will be
Sodium metal crystallizes as a body centred cubic lattice with the cell edge 4.29Å. What is the radius of sodium atom.
An alloy of Cu, Ag and Au is found to have copper constituting the ccp lattice. If silver atoms occupy the edge centre and gold is present at body centre, the alloy has a formula
A face-centred cubic element (atomic mass 60) has a cell edge of 400 pm. What is its density?
If the coordination number of Ca2+ in CaF2 is 8, then the coordination number of F– ion would be
How many chloride ions are there around sodium ion in sodium chloride crystal.
The vacant space in bcc lattice unit cell is (AIPMT 2015)
A given metal crystallises out with a cubic structure having edge length of 361 pm. If there are four metal atoms in one unit cell, What is the radius of one atom? (AIPMT 2015)
The number of tetrahedral and octahedral voids in a CCP array of 100 atoms are respectively (Kerala CEE 2014)
Copper crystallises in face centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm? (Manipal 2014)
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…
If a is the length of the side of a cube, the distance between the body centered atom and one corner atom in the cube will be (AIPMT 2014)
Which of the following can be regarded as molecular solid? (EAMCET 2014)
Which one of the following is a covalent crystal? [KCET 2011]
The metal crystallises with a face-centred cubic lattice. The edge of the unit cell is 408 pm. The diameter of the metal atom is (CBSE AIPMT 2012)
Structure of a mixed oxide is cubic close packed (ccp). The cubic unit cell of mixed oxide is composed of oxide ions. One fourth of the tetrahedral voids are occupied by divalent metal A and the octahedral voids are o…
Number of unit cells in 4 g of X (atomic mass = 40) which crystallises in bcc pattern is (NA = Avogadro's number) (OJEE 2010) (a) A 0.1N (c) A 2 0.1N x (b) A 0.1N (d) A N x
Schottky defect in crystals is observed when (RPMT 2010)
AB crystallises in a body-centred cubic lattice with edge 'a' equal to 387 pm. The distance between two oppositely charged ions in the lattice is (CBSE AIPMT 2010)
If in a crystal lattice of a compound, each corner of a cube is enjoyed by sodium, each edge of a cube has oxygen and centre of cube is enjoyed by tungsten (W), then give its formula [Guj. CET 2011]
The number of carbon atoms per unit cell of diamond unit cell is (NEET 2013)
A solid is formed by two elements P and Q. The element Q forms cubic close packing and atoms of P occupy one third of tetrahedral voids. The formula of the compound is [AMU 2010]
The appearance of colour in solid alkali metal halides is generally due to [RPMT 2010]
Which of the following compounds shows both Frenkel and Schottky defects [AMU 2010]
Three elements A, B and C crystallise into a cubic solid lattice. Atoms A occupy the corners, B atoms, the cube centres and C atoms, the face. The formula of the compound is [AMU 2009]