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
In ccp arrangement the pattern of successive layers can be designated as
Doping of silicon (Si) with boron (B) leads to
Xenon crystallises in the fcc lattice and the edge of the unit cell is 620 pm. The nearest neighbour distance of Xe is
The two dimensional coordination number of a molecule in square close packed layer is
The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class is
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
Crystalline solid is
Which of the following statements is not true about NaCl structure
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 …
Which kind of defect is shown by the given crystal?
Which of the following is a molecular crystal
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
An alloy of Cu, Ag and Au is found to have copper constituting the ccp lattice. If silver atoms occupy the edge centre and gold is present at body centre, the alloy has a formula
Assuming the metal atom to be spherical and crystallizes in fcc lattice with edge length 407 pm, its radius will be
An element (atomic mass = 100 g/mol) having bcc structure has unit cell edge 400 pm. Then density of the element 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
An element has a body-centred cubic (bcc) structures with a cell edge of 444 pm. The density of the element is 7.2 g/cm3. How many atoms are present in 404 g of the element?
The number of atoms present in unit cell of a monoatomic substance of simple cubic lattice is
Glass is
The number of atoms per unit cell in primitive (sc), body-centered (bcc), face-centered (fcc) and end- centered (ecc) unit cell decreases as
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
In a face-centred cubic lattice, a unit cell is shared equally by how many unit cells
The number of atoms or molecules contained in one body centered cubic unit cell is
A metal crystallises into a lattice containing a sequence of layer as AB ABAB....... . What percentage of voids are left in the lattice?