Question

Which of the above represents the formula for the most common compound of A and B, where A and B represent given pairs of elements or polyatomic ions as indicated below?
A) $N{H}_4^{+}$

B) $Cl$

• A. $AB$
• B. $A{B}_2$
• C. $A_{2}B$
• D. $A{B}_3$
• E. $A_2{B}_3$

Answer 1

The correct option is A $AB$

${NH}_4^{+}$ is a cation and ${Cl}^{-}$ is an anion. They combine by ionic bond to form ${NH}_{4}Cl$. Thus, AB is the correct option.