Atoms of elements `B` from hep lattice and those of element `A` occupy two-thirds of tetrahedral voids. What is the formula of the compound formed by elements `A` and `B`?

Atoms of elements B from hcp lattice and those of element A occupy two-thirds of tetrahedral voids. What is the formula of the compound formed by elements A and B ?

Atoms of elements B from hcp lattice and those of element A occupy two-thirds of tetrahedral voids. What is the formula of the compound formed by elements A and B ?

Atoms of element B form hep lattice and those of the elements A occupy 2/3rd of tetrahedral voids. What is the formula of the compound formed by elements A and B.

Atoms of element B form hcp lattice and those of the element A occupy 2/3rd of tetrahedral voids. What is the formula of the compound formed by the elements A and B?

Atoms of element B form hcp lattice and those of the element A occupy 2/3^(rd) of tetrahedral voids. What is the formula of the compoound formed by the elements A and B?

Atoms of element B form hcp lattice and those of the element A occupy 2//3^("rd") of tetrahedral voids . What is the formula of the compound formed by the element A and B ?