In FCC lattice A , B , C , D atoms are arranged at corners, face centres, octahedral voids and tetrahedral voids respectively, then the body diagonal contains.

Question

In FCC lattice A , B , C , D atoms are arranged at corners, face centres, octahedral voids and tetrahedral voids respectively, then the body diagonal contains. (A) 2A , 2D (B) 2A,C, 2D (C) 2A, 2B, D (D) 2A, 2B, 2C

Tardigrade Admin · Accepted Answer

Body diagonal contain two atoms at comers, one octahedral void and two tetrahedral voids. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/fe8e8b064bbfff78f85727e241a05158-.png" /> A 3B (3B present at top, back and left face) forms tetrahedral void in which D is present.

Q. In $FCC$ lattice $A, B, C, D$ atoms are arranged at corners, face centres, octahedral voids and tetrahedral voids respectively, then the body diagonal contains.

2A , 2D

2A,C, 2D

2A, 2B, D

2A, 2B, 2C

Body diagonal contain two atoms at comers, one octahedral void and two tetrahedral voids.

$A$ & $3 B$ ( $3 B$ present at top, back and left face) forms tetrahedral void in which $D$ is present.

Q. In FCC lattice A,B,C,D atoms are arranged at corners, face centres, octahedral voids and tetrahedral voids respectively, then the body diagonal contains.