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:

从图中可看出Model B展示了电子的转移从而形成离子（一个原子失去电子，另一个原子得到电子），而没有显示电子的共享。逐一分析选项，只有“Model A shows the sharing of electrons, and model B shows the formation of ions.”符合对模型差异的描述。

Answer:

Model A shows the sharing of electrons, and model B shows the formation of ions.