select all of the models of ions.

select all of the models of ions.
Answer
Answer:
The models that show an unequal number of protons and electrons are models of ions. Without seeing which ones are checked in your image, in general, if a model has a different count of protons (+ charge) and electrons (- charge), it represents an ion. For example, if a model has 3 protons and 2 electrons, it is a positively - charged ion (cation), and if it has 3 protons and 4 electrons, it is a negatively - charged ion (anion).
Explanation:
Step1: Recall ion definition
An ion is an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
Step2: Analyze particle counts
Check the number of protons and electrons in each model. If they are unequal, it's an ion.