19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class 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
Packing efficiency of simple cubic lattice is …A… Here, A refers to
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
The two dimensional coordination number of a molecule in square close packed layer is
In ccp arrangement the pattern of successive layers can be designated as
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 …
The number of atoms in 100 g of an FCC crystal with density d = 10 g cm –3 and cell edge as 200 pm is equal to
The property of crystalline solid is not
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
Crystals can be classified into basic crystal habits equal to
Solid CO₂ is an example of
Which of the following is a pseudo solid
Which of the following is an example of metallic crystal solid
Tetragonal crystal system has the following unit cell dimensions
Which of the following has the highest value of energy gap?
For the structure of solid given below if the lattice points represent A+ ions & the B– ions occupy all the tetrahedral voids then coordination number of A is
Crystalline solid is
Doping of silicon (Si) with boron (B) leads to
The number of atoms contained (i) in one body centred cubic unit cell and (ii) in one face centred cubic unit cell, is
What is the coordination number of sodium in Na₂O
An element (atomic mass = 100 g/mol) having bcc structure has unit cell edge 400 pm. Then density of the element 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?
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
For an ionic crystal of the general formula AX and coordination number 6, the value of radius ratio will be