A compound formed by elements A and B crystallizes in the cubic arrangement in which A atoms are at the corners of a cube and B atoms are at the face centres. What is the formula of compound?

Question

A compound formed by elements A and B crystallizes in the cubic arrangement in which A atoms are at the corners of a cube and B atoms are at the face centres. What is the formula of compound? (A)  AB3  (B)  B 3A  (C)  A2B2  (D)  AB2

Tardigrade Admin · Accepted Answer

The number of A atoms in the unit cell = 8/8 =1 The number of B atoms =6/2=3 Hence, the formula of the compound =AB3

Q. A compound formed by elements A and B crystallizes in the cubic arrangement in which A atoms are at the corners of a cube and B atoms are at the face centres. What is the formula of compound?

$A B_{3}$

$B_{3} A$

$A_{2} B_{2}$

$A B_{2}$

$A B_{4}$

The number of A atoms in the unit cell = 8/8 =1 The number of B atoms =6/2=3 Hence, the formula of the compound $= A B_{3}$

Q. A compound formed by elements A and B crystallizes in the cubic arrangement in which A atoms are at the corners of a cube and B atoms are at the face centres. What is the formula of compound?

AB3​

B3​A

A2​B2​

AB2​

AB4​