Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Most Important Selected Qs for JEE AdvancedChemistrySolid State

In CCP, there are 8 tetrahedral sites and all are present completely inside the unit cell. There are 13 octahedral sites out of which 1 is at the body centre and 12 are at edge centres. Like CCP, another packing is HCP, in which the number of tetrahedral sites that are completely inside one unit cell is x . Mark the value of x^2 . [Assume those sites are completely inside the cell that are not shared between unit cel

Correct answer

64

Step-by-step solution

Hint : H.C.P. contain 20 T.H site Solution : In H.C.P., 8 T.V are inside the unit cell while 12 are at vertical edges (2 on each vertical edge) T.V. =8+12 1 3 =12 One edge in H.C.P. contributes 1 3 .

Practice Solid State on Quantrex Academy →

More from Solid State

The density (in g cm ⁻³ ) of the metal which forms a cubic close packed (ccp) lattice with an axial distance (edge length) equal to 400 pm is . Use: Atomic mass of metal =105.6 amu 2025Atoms of metals x , y and z form face-centred cubic (fcc) unit cell of edge length L x , body-centred cubic (bcc) unit cell of edge length L y , and simple cubic unit cell of edge 2023Which of the following expressions is correct in case of a CsCl unit cell (edge length ‘ a ’) ? 2023Sodium metal crystallises in a body centred cubic lattice with unit cell edge length of 4 Å . The radius of sodium atom is _ _ _ × 10 - 1 Å . (Nearest integer) 2023An atomic substance A of molar mass 12 g mol – 1 has a cubic crystal structure with edge length of 300 pm . The no. of atoms present in one unit cell of A is (Nearest integer 2023The correct relationships between unit cell edge length ‘ a ’ and radius of sphere ‘ r ’ for face-centred and body-centred cubic structures respectively are 2023Number of crystal systems from the following where body centred unit cell can be found, is _____. Cubic, tetragonal, orthorhombic, hexagonal, rhombohedral, monoclinic, triclinic 2023A compound is formed by two elements X and Y . The element Y forms cubic close packed arrangement and those of element X occupy one third of the tetrahedral voids. What is the form 2023 Full Solid State list All Most Important Selected Qs for JEE Advanced PYQs