19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
If the coordination number of Ca²⁺ in CaF₂ is 8, then the coordination number of F– ion would be
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?
Which of the following is a pseudo solid
Amorphous solids are
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 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
What is the coordination number of sodium in Na₂O
Among solids the highest melting point is established by
If the value of ionic radius ratio c a r r is 0.52 in an ionic compound, the geometrical arrangement of ions in crystal is
Potassium has a bcc structure with nearest neighbour distance 4.52 Å. Its atomic weight is 39. Its density will be
The appearance of colour in solid alkali metal halides is generally due to [RPMT 2010]
Which one of the following forms a molecular solid when solidified?
Which is not a property of solids
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 chloride ions are there around sodium ion in sodium chloride crystal.
For a solid with the following structure, the co- ordination number of the point B is
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is
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)
The number of tetrahedral voids in the unit cell of a face centred cubic lattice of similar atoms is
In hcp arrangement, the number of nearest neighbours are
A solid A+B– has the B– ions arranged as below. If the A+ ions occupy half of the octahedral sites in the structure. The formula of solid 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)
For the structure of solid given below if the lattice points represent A+ ions & the B– ions occupy all the tetrahedral voids then coordination number of A is
Assuming the metal atom to be spherical and crystallizes in fcc lattice with edge length 407 pm, its radius will be
The structure of MgO is similar to NaCl. What would be the coordination number of magnesium.