19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The two dimensional coordination number of a molecule in square close packed layer is
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
In ccp arrangement the pattern of successive layers can be designated as
In A+ B– ionic compound, radii of A+and B– ions are 180 pm and 187 pm respectively. The crystal structure of this compound will be
In a face centred cubic arrangement of A and B atoms when A atoms are at the corner of the unit cell and B atoms of the face centres. One of the A atom is missing from one corner in unit cell. The simplest formula of …
Crystals can be classified into basic crystal habits equal to
The property of crystalline solid is not
If the radius of K⁺ and F– are 133 pm and 136 pm respectively, the distance between K⁺ and F– in KF is
Tetragonal crystal system has the following unit cell dimensions
Solid CO₂ is an example of
Which of the following is an example of metallic crystal solid
In a solid lattice the cation has left a lattice site and is located at an interstitial position, the lattice defect is
Given, Column A Column B A. Ionic solid I. NaCl B. Metallic solid II. Fe C. Covalent solid III. C(graphite) D. Molecular solid IV. Dry ice
The number of atoms contained (i) in one body centred cubic unit cell and (ii) in one face centred cubic unit cell, is
In a cubic structure of compound which is made from X and Y, where X atoms are at the corners of the cube and Y at the face centres of the cube. The molecular formula of the compound is
Which of the following has the highest value of energy gap?
Crystalline solid is
Doping of silicon (Si) with boron (B) leads to
Which of the following is a pseudo solid
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]
A compound is formed by elements A and B. This crystallizes in the cubic structure when atoms A are the corners of the cube and atoms B are at the centre of the body. The simplest formula of the compound is
A metal crystallizes in a face-centered unit cell. Its edge length is 0.410 nm. The radius of the metal is
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
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
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)