19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
A metal crystallizes in a face-centered unit cell. Its edge length is 0.410 nm. The radius of the metal is
For tetrahedral coordination the radius ratio r r should be
The ratio of cationic radius to anionic radius in an ionic crystal is greater than 0.732. Its coordination number is
Total number of voids in 0.5 mole of a compound forming hexagonal closed packed structure are
For a solid with the following structure, the co- ordination number of the point B is
The ratio of cationic radius to anionic radius in an ionic crystal is greater than 0.732. Its coordination number is
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
Which one of the following is a covalent crystal? [KCET 2011]
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
An element with atomic mass 100 has a bcc structrue and edge length 400 pm. The density of element is
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 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?
How many lithium atoms are present in a unit cell with edge length 3.5 Å and density 0.53 gcm –3? (Atomic mass of Li = 6.94)
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 element (atomic mass = 100 g/mol) having bcc structure has unit cell edge 400 pm. Then density of the element is
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)
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 number of tetrahedral voids in the unit cell of a face centred cubic lattice of similar atoms is
Zinc oxide loses oxygen on heating according to the reaction, heat ZnO Zn O 2e → It becomes yellow on heating because
Which of the following is an example of network solid? (AIIMS 2018) (a) SO Solid (b) 2I
Number of unit cells in 4 g of X (atomic mass=40). Which crystallises in bcc pattern is (NA=Avogadro number)
Total volume of atoms present in a face centred cubic unit cell of a metal is (r = radius of atom) (a) r (b) r (c) r (d) r
Edge length of a cube is 400 pm, its body diagonal would be
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…
Mostly crystals show good cleavage because their atoms, ions or molecules are