19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
In ABC packing if the number of atoms in the unit cell is n then the number of tetrahedral voids in the unit cell is equal to
Solid SO2 and NH3 are the examples of which of the following types of solids? (CBSE 2018)
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)
Which of the following is an example of network solid? (AIIMS 2018) (a) SO Solid (b) 2I
In a cubic lattice of ABC, A atoms are present at all corners except one corner which is occupied by B atoms. C atoms are present at face centers. The formula of the compound is
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
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 atoms present in unit cell of a monoatomic substance of simple cubic lattice is
Lithium has a bcc structure. Its density is 520 kg m–3 and its atomic mass is 6.94 g mol–1. Calculate the edge length of a unit cell of Lithium metal. (NA = 6.02 × 1023 mol–1) (NEET 2016)
The number of atoms per unit cell in primitive (sc), body-centered (bcc), face-centered (fcc) and end- centered (ecc) unit cell decreases as
The total volume of atoms present in face-centred cubic unit cell of a metal is (r is atomic radius) (a) r (b) r (c) r (d) r
In a face-centred cubic lattice, a unit cell is shared equally by how many unit cells
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)
The number of tetrahedral voids in the unit cell of a face centred cubic lattice of similar atoms is
Number of atoms in the unit cell of Na (bcc type crystal) and Mg (fcc type crystal) are, respectively
The metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g/cm3. The molar mass of the metal is (NA =Avogadro's constant 6.02 10 mol ) x (NEET 2013)
Which of the following can be regarded as molecular solid? (EAMCET 2014)
A metal crystallises into a lattice containing a sequence of layer as AB ABAB....... . What percentage of voids are left in the lattice?
The number of tetrahedral and octahedral voids in a CCP array of 100 atoms are respectively (Kerala CEE 2014)
For a solid with the following structure, the co- ordination number of the point B is
A face-centred cubic element (atomic mass 60) has a cell edge of 400 pm. What is its density?
Aluminium has fcc structure. The length of the unit cell is 404 pm. If the density of the metal is 2.7 g cm–3, the molar mass of Al atom is
An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centres of the faces of the cube. The empirical formula for this compounds would be
The ratio of cationic radius to anionic radius in an ionic crystal is greater than 0.732. Its coordination number is