Examine the defective crystal given below and answer the question that follows: State if the above…

Examine the defective crystal given below and answer the question that follows:

$\text{A}^+$	$\text{B}^-$	$\text{A}^+$	$\text{B}^-$	$\text{A}^+$	$\text{B}^-$
$\text{B}^-$	$\text{A}^+$		$\text{A}^+$	$\text{B}^-$	$\text{A}^+$
$\text{A}^+$	$\text{B}^-$	$\text{A}^+$		$\text{A}^+$	$\text{B}^-$

State if the above defect is stoichiometric or non-stoichiometric. How does this defect affect the density of the crystal? Also, write the term used for this type of defect.