19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
In a solid lattice the cation has left a lattice site and is located at an interstitial position, the lattice defect is
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
Which one of the following forms a molecular solid when solidified?
If the number of atoms per unit cell in a crystal is 2, the structure of crystal 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)
Which of the following is an example of network solid? (AIIMS 2018) (a) SO Solid (b) 2I
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…
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)
Solid SO2 and NH3 are the examples of which of the following types of solids? (CBSE 2018)
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)
The vacant space in bcc lattice unit cell is (AIPMT 2015)
In CsCl structure, the coordination number of Cs+ is
Niobium crystallises in body centred cubic structure. If density is 8.55 g cm-3, then the atomic radius of niobium is (atomic mass of niobium = 93u) (AllMS 2018)
An element with atomic mass 100 has a bcc structrue and edge length 400 pm. The density of element is
An atom forms face centred cubic crystal with density d = 8.92g/mL and edge length a 3.6 10 cm x . The molecular mass of atom in amu is (JIPMER 2018)
The unit cell of a NaCl lattice
In NaCl lattice the radius ratio is Na Cl r r =
Which of the following statements is not true about NaCl structure
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 …
The correct statement regarding F-centre 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
How many chloride ions are there around sodium ion in sodium chloride crystal.
The structure of MgO is similar to NaCl. What would be the coordination number of magnesium.
If we mix pentavalent impurity in a crystal lattice of germanium then what type of semiconductor formation will occur?
Which type of defect present in NaCl ? (JIPMER 2019)