Model 3 is the most effective because it shows that molecules can be made out of more than one type of atom
Explanation:
The most effective model is the first model which shows that molecules can be made out of more than one type of atom
- An element is a distinct substance that cannot be split up into simpler substances.
- When elements combine together they either form compounds or molecules.
- Molecules are usually atoms that are covalently bonded together. They have very fascinating and unique properties.
- The third model perfect shows how molecules can be made up of the same atom and also different atoms.
- Atoms in molecules share their valence electrons.
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covalent bonds https://brainly.com/question/11730855
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