what is the distance bet'n 2 tetrahedral voids in ccp structure ???????

ans is

1. a/root 2

2.a/2

3.root3*a/2

4.all above

answer is 4

Yes the answer is all of the above .**Expl:anation : ** As from the figure above it can be seen that in ccp there are eight tetrahedral voids located at the centre of each unit cell, i.e each unit cell contains one tetrahedral void at its centre.1) The distance between two tetrahedral voids located in a unit cell lying above and below or on sideways to eachother have a distance of **a/2** between their centres.

2) Simmilarly the distance between two tetrahedral voids loacated in the lattice in a face diagonal direction have distance between them of a/sqrt2

3) Now the distance between two tetrahedral voids located along the body diagonal of ccp lattice is a*sqrt3/2

**
**