19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The appearance of colour in solid alkali metal halides is generally due to [RPMT 2010]
Potassium has a bcc structure with nearest neighbour distance 4.52 Å. Its atomic weight is 39. Its density will be
The number of atoms in 100 g of an FCC crystal with density d = 10 g cm –3 and cell edge as 200 pm is equal to
An element with atomic mass 100 has a bcc structrue and edge length 400 pm. The density of element is
AB crystallises in a body-centred cubic lattice with edge 'a' equal to 387 pm. The distance between two oppositely charged ions in the lattice is (CBSE AIPMT 2010)
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 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
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
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?
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 …
The intermetallic compound LiAg crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class is
In a cubic structure of compound which is made from X and Y, where X atoms are at the corners of the cube and Y at the face centres of the cube. The molecular formula of the compound is
The metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72 g/cm3. The molar mass of the metal is (NA =Avogadro's constant 6.02 10 mol ) x (NEET 2013)
Sodium metal crystallizes as a body centred cubic lattice with the cell edge 4.29Å. What is the radius of sodium atom.
The two dimensional coordination number of a molecule in square close packed layer is
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
The vacant space in bcc lattice unit cell is (AIPMT 2015)
In ccp arrangement the pattern of successive layers can be designated as
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
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
Solid SO₂ and NH₃ are the examples of which of the following types of solids? (CBSE 2018)
The number of atoms present in unit cell of a monoatomic substance of simple cubic lattice 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
In a face-centred cubic lattice, a unit cell is shared equally by how many unit cells
Amorphous solids are