19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
In a face-centred cubic lattice, a unit cell is shared equally by how many unit cells
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 number of tetrahedral and octahedral voids in a CCP array of 100 atoms are respectively (Kerala CEE 2014)
In a solid lattice the cation has left a lattice site and is located at an interstitial position, the lattice defect is
Which of the following has the highest value of energy gap?
Identify the incorrect statement.
The correct statement regarding F-centre is
If ‘a’ stands for the edge length of the cubic systems: simple cubic, body centred cubic and face centred cubic, then the ratio of radii of the spheres in these system will be respectively. [CBSE AIPMT 2008]
For an ionic crystal of the general formula AX and coordination number 6, the value of radius ratio will be
If the radius of K⁺ and F– are 133 pm and 136 pm respectively, the distance between K⁺ and F– in KF is
The maximum radius of sphere that can be fitted in the tetrahedral hole of cubic close packing of sphere of radius r is.
Ferrous oxide has a cubic structure and each edge of the unit cell is 5.0 Å. Assuming density of the oxide as 4.0 g cm–3, then the number of Fe²⁺ and O₂– ions present in each unit cell will be
On the basis of their magnetic properties, substances can be classified into …A… categories. Here, A refers to
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
A metal has bcc structure and the edge length of its unit cell is 3.04Å. The volume of the unit cell in cm will be
Which of the following fcc structure contains cations in alternate tetrahedral voids ?
The number of atoms per unit cell of bcc structure is [Kerala CEE 2009]
Which of the following can be regarded as molecular solid? (EAMCET 2014)
Bravais lattices are of
Which of the following is not an alkaline earth metal?
Alkali metals readily …X… electron to give monovalent M+ ion. Here, X refer to
…A… has maximum degree of hydration. Here, A refers to
Which of the following metal salt is mostly hydrated?
Choose the correct option from the codes given below regarding elements and their characteristics colour given in Column I and II of the following table. Column I Column II A. Li 1. Crimson red B. Na 2. Yellow C. K 3.…
Choose the correct statements(s) among the following. I. Alkali metal is highly reactive. II. Alkali metal has lowest ionization enthalpy among their respective period. III. Ionization energy of alkali metals increase…