Question

A compound is formed by elements $A$ and $B$. This crystallizes in the cubic structure where the $A$ atoms are at the corners of the cube and $B$ atoms are at the body centers. The simplest formula of the compound is:

• A. $AB$
• B. $A_{6}B$
• C. $A_8{B}_4$
• D. $A{B}_6$

Answer 1

The correct option is A $AB$

If one of the atoms are at the corners of the cube and the other at the body means it is body center cubic crystal in which it has the co ordination number 8.In this case the formula of the compound is generally should be $AB$ type.Ex: $NaCl$. Hence, option A is correct.