Structure of a mixed oxide is CCP. The unit cell is composed of oxide ion. One fourth of the tetrahedral voids are occupied by divalent metal A & the octahedral voids are occupied by monovalent metal B. What will be the formula of the solid?
Asked by Kalita Padmanath | 11th May, 2017, 01:24: PM
Expert Answer:
Number (N) of atoms in ccp = 4=O2-
Hence no. of tetrahedral holes = 2 x N = 2 x 4= 8
No. of A2+ ions = 8 x ¼ =2
No. of octahedral voids = No. of B+ ions = n = 4
Ratio of O2- : A+2: B+ =4: 2: 4=2: 1: 2
Hence the formula of oxide = AB2O2
Number (N) of atoms in ccp = 4=O2-
Hence no. of tetrahedral holes = 2 x N = 2 x 4= 8
No. of A2+ ions = 8 x ¼ =2
No. of octahedral voids = No. of B+ ions = n = 4
Ratio of O2- : A+2: B+ =4: 2: 4=2: 1: 2
Hence the formula of oxide = AB2O2
Answered by Vaibhav Chavan | 11th May, 2017, 04:26: PM
Related Videos
- explain please
- pls solve sir
- How many types of 3dimensions are there in a lattice please define.
- sir in types of unit cell we studied it can be of 4 types i.e primitive, face centred, body centred and end centred, but while studing 3D close packing it was told that it can be of 3 types i,e. simple(primitive) cubic unit cell, hcp and ccp. but i am not able to understand that hcp is a type of unit cell or it is one of the 7 crystal system or somthing else?and if it is type of unit cell then why it is not taught under the topic types of unit cell. and if it is a crystal system then what about the rest 6 crystal system, then why rest 6 crystal system does not comes under 3 dimensional close packing?
- In a cubic lattice A atoms having FCC arrangement B atoms are at body centers and C atoms are at alternate edge centers . The formula of the unit cell will be ;
- The number of c4 and c3- axes in a cubic crystal lattice are x and y respectively the value of x+y= a] 2 b] 7
- Hexagonal close packing and cubic close packing
- Analysis shows that nickel oxide has the formula ni 0.98 o1.00. What fractions of nickel exist as ni 2+ and ni 3+ ions?
- What kind of symmetry is exhibited by the macth box?
- STAE DIFFERENCE BETWEEN THE TETRAHEDRAL AND OCTAHEDRAL VOIDS , THEIR LOCATIONS WITH THE HELP OF FIGURE
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change