Solid StateHard
Question
In a face centerd lattice of X and Y, X atoms are present at the corners while Y atoms are at face centers. Then the formula of the compound would be if one of the X atoms is missing from a corner in each unit cell
Options
A.X7Y24
B.X24Y7
C.XY24
D.X24Y
Solution
No. of X atom per unit cell = 7 × 
No. of Y atom per unit cell = 6 ×
= 3
No. of X atom per unit cell = 7 ×
No. of Y atom per unit cell = 6 ×= 3
∴ Formula = X7/8 Y3 or X7 Y24.
No. of Y atom per unit cell = 6 ×
= 3No. of X atom per unit cell = 7 ×
No. of Y atom per unit cell = 6 ×
= 3∴ Formula = X7/8 Y3 or X7 Y24.
Create a free account to view solution
View Solution FreeMore Solid State Questions
Superconductors are substances which...If the unit cell length of sodium chloride crystal is 600 pm, then its density will be...A compound of A and B crystallizes in a cubic lattice in which A atoms occupy the lattice points at the corners of a cub...Element X crystllizes in a 12 co-ordination of fcc lattice. On applying high temperature it changes to 8 co-ordination b...Lithium borohydride (LiBH4) crystallizes in an orthorhombic system with four molecules per unit cell. The unit cell dime...