The Modern Model of the Atom

The modern model of the atom is based on the idea that atoms are composed of a small, dense nucleusA membrane-bound organelle in eukaryotic cells that contains DNA. surrounded by a cloud of electrons.

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The nucleus is made up of protons and neutrons, which are both types of subatomic particles with mass. Protons are positively charged, and neutrons are neutral (they have no charge). The number of protons in the nucleus determines the atomic number of an element, which is the unique identifier for each element.

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The electrons in the atom are located in shells or energy levels around the nucleus, and they have a negative charge. The number of electrons in the atom is equal to the number of protons, which ensures that the overall charge of the atom is neutral. The arrangement of the electrons in the atom determines the chemical properties of the element, and it is responsible for the way atoms bond together to form molecules.

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