PLEASE HELP 30 POINTS Examine the compound model.
Which type of compound is represented in the model and why?
Select all that apply.

1. This model is an ionic compound because the rigid formation is an example of a crystal lattice.

2. This model is not an ionic compound because the electrons are not being transferred between positive and negative ions; instead, only positive ions are present.

3. This model is not a metallic compound because the electrons are being transferred between different ions in the crystal structure.

4. This model is a metallic compound because it consists of free-moving electrons in a crystal formation.