Question

note: to answer some of the questions, it may help to reference a periodic table.
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which type of compound, metallic or ionic, is represented in the model? why?
(select all that apply)
ionic bond because the rigid formation is an example of a crystal lattice
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.
metallic compound because it consists of free-moving electrons, known as
the sea of electrons, in a crystal formation
this model is not a metallic compound because the electrons are being
transferred between different ions in the crystal structure.

Explanation:

Ionic compounds have a crystal lattice structure formed by the transfer of electrons between positive and negative ions. Metallic compounds have a "sea of electrons" where electrons are delocalized among positive ions.

• For the first option: Ionic compounds have a crystal lattice. But if only positive ions are present (as per the second option's reasoning), it can't be ionic.
• The second option: In ionic compounds, electrons are transferred between positive and negative ions. If only positive ions are present (no negative ions to receive electrons), it's not ionic.
• The third option: Metallic compounds have free - moving electrons (sea of electrons) in a crystal formation.
• The fourth option: In metallic compounds, electrons are delocalized (not transferred between ions in the way of ionic bonding).

Answer:

B. 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.
C. metallic compound because it consists of free - moving electrons, known as the sea of electrons, in a crystal formation.