19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The number of tetrahedral voids in the unit cell of a face centred cubic lattice of similar atoms is
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
If the coordination number of Ca2+ in CaF2 is 8, then the coordination number of F– ion would be
Copper crystallises in face centred cubic lattice with a edge length of 361pm. What is the radius of copper atom in pm?
The unit cell of a NaCl lattice
What is the coordination number of sodium in Na2O
A metal crystallizes in a face-centered unit cell. Its edge length is 0.410 nm. The radius of the metal is
In CsCl lattice the coordination number of Cl– ion is
The number of octahedral voids in a unit cell of a cubical closest packed structure is
In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is
Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are [NEET 2021]
The correct option for the number of body centred cubic unit cells in all 14 types of Bravais lattice unit cells is: [NEET 2021]
Which type of defect present in NaCl ? (JIPMER 2019)
The tetrahedral voids present in 0.5 mole of hcp crystal structure are (AIIMS 2019) (a) 3.6 10 x (b) 9 10 x (c) 3.6 10 x (d) 6.02 10 x
Formula of nickel oxide with metal deficiency defect in its crystal is Ni0.98O. The crystal contains Ni2+ and Ni3+. ions. The fraction of nickel existing as Ni2+ ions in the crystal is (NEET (Odisha) 2019)
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 …
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…
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)
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)
Solid SO2 and NH3 are the examples of which of the following types of solids? (CBSE 2018)
Which of the following is an example of network solid? (AIIMS 2018) (a) SO Solid (b) 2I
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)
In a compound, atoms of element Y form ccp lattice and those of element X occupy 2/3rd of tetrahedral voids. The formula of the compound will be
The unit cell of a binary alloy composed of A and B metals, has ccp. Structure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallisation of this alloy, in…
Copper crystallises in fcc lattice with a unit cell edge of 361 pm. The radius of copper atom is