Question

model b
which statement best explains how the models differ?
model a shows the formation of ions, and model b does not show the formation of ions.
model a does not show the formation of ions, and model b shows the sharing of electrons.
model a shows the sharing of electrons, and model b shows the formation of ions.
model a shows the transfer of an electron, and model b shows the sharing of electrons.

Explanation:

Ionic bonds involve the transfer of electrons to form ions. Covalent bonds involve the sharing of electrons. Model A (not shown here but based on typical models) likely shows electron transfer (ionic bond - ion formation). Model B shows electron sharing (covalent bond - no ion formation as electrons are shared not transferred).

Answer:

Model A shows the formation of ions, and model B does not show the formation of ions.