Question

An atom of element A has three electrons in its outer shell and B has six electrons in its outermost shell. The formula of the compound formed between these two will be :

• A. $A_6{B}_6$
• B. $A_2{B}_3$
• C. $A_3{B}_2$
• D. $A_{2}B$

Answer 1

The correct option is B $A_2{B}_3$

$A^{3+}{B}^{2-}$
$A_2{B}_3$ compound