Question

choose one or more: calcium is the cation. calcium is the anion. phosphorus is the cation. phosphorus is the anion. oxygen is the cation. oxygen is the anion. phosphate is the polyatomic cation. phosphate is the polyatomic anion. it would be named as a molecular compound. it would be named as an acid. part 3 (0.7 point) n₂o₃ choose one or more: nitrogen is the cation. nitrogen is the anion. oxygen is the cation. oxygen is the anion. it would be named as a molecular compound. it would be named as an acid

Explanation:

Step1: Recall ion - type definitions

Cations are positively charged ions and anions are negatively charged ions. In ionic compounds, metals usually form cations and non - metals usually form anions. Polyatomic ions are groups of atoms with a net charge. Molecular compounds are formed between non - metals and acids are substances that can donate protons.

Step2: Analyze calcium - containing compounds

Calcium is a metal. In chemical compounds, calcium forms a $Ca^{2 + }$ ion, which is a cation. Phosphate ($PO_{4}^{3 - }$) is a polyatomic anion.

Step3: Analyze $N_2O_3$

$N_2O_3$ is a compound composed of non - metals (nitrogen and oxygen). It is a molecular compound. In molecular compounds, we don't typically refer to the component elements as cations or anions as there is no complete transfer of electrons to form ions; instead, electrons are shared.

Answer:

For the first part: Calcium is the cation., Phosphate is the polyatomic anion.
For the second part: Oxygen is the anion., It would be named as a molecular compound.