Biology, 21.10.2020 19:01 claudiasfandom

A model of an atom includes red marbles for electrons, green marbles for protons, and blue marbles for neutrons. All marbles have a radius of 2 cm. How could the model be changed to represent more properties of an atom?

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A model of an atom includes red marbles for electrons, green marbles for protons, and blue marbles f...

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