Question

Element A forms tripositive ion and element B forms dinegative ion the chemical formula of the compound formed with Aand B will be

Answer 1

Answer:

I Hope it will work.

Explanation:

Atom 'A' at FCC lattice points means number of atom A in unit cell is:

 

8

1

​

×8+  

2

1

​

×6=4.

If in a close-packed structure (ccp or fcc) there are 'n' atoms or ions then the number of tetrahedral voids will be 2n. Thus the number of atom B is =2×4=8

Thus the compound is A  

4

​

B  

8

​

 or AB  

2

​