Question

select the correct answer from each drop-down menu. the compound ammonium sulfate consists of two ions, nh₄⁺ and so₄²⁻, both of which are
ions. a molecule of the compound consists of
nh₄⁺ ion(s) and
so₄²⁻ ion(s).
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monatomic
polyatomic
negative
positive

Explanation:

1. For the first dropdown: Ions made of multiple atoms (like \( \text{NH}_4^+ \) and \( \text{SO}_4^{2-} \)) are polyatomic ions. Monatomic ions are single - atom ions. So the first answer is polyatomic.
2. For the second dropdown (number of \( \text{NH}_4^+ \) ions): The formula of ammonium sulfate is \( (\text{NH}_4)_2\text{SO}_4 \). To balance the charges, since \( \text{SO}_4^{2-} \) has a charge of - 2, we need two \( \text{NH}_4^+ \) ions (each with +1 charge) to make the compound neutral. So the number of \( \text{NH}_4^+ \) ions is 2.
3. For the third dropdown (number of \( \text{SO}_4^{2-} \) ions): From the formula \( (\text{NH}_4)_2\text{SO}_4 \), we can see that there is 1 \( \text{SO}_4^{2-} \) ion per formula unit.

Answer:

First dropdown: polyatomic
Second dropdown: 2
Third dropdown: 1