The concentration of positive charge and mass in Rutherford's atomic model is called the nucleus. Rutherford's experiments involving the use of alpha particle beams directed onto thin metal foils demonstrated the existence of the nucleus. The nucleus of an atom contains positively charge particles called protons and other uncharged particles called neutrons. According to this model most volume of an atom is made up of an empty space.
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Chemical Property describes the way substances react with other substances to form new substances.
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Hope it helps you
Here's an example of a bar graph.
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An electron is a negatively charged component of an atom
the proton is a positively charged body.
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A. Rutherford and Bohr
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I think this is right but I am not sure it has been a while since i read about them
