Electrons
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Electrons PowerPoint PPT Presentation


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Electrons. Electrons. The arrangement of electrons in an atom helps determine the properties and behavior of that atom. Electrons have special rules…. Electrons live in something called energy levels . Only so many electrons can be in any energy level.

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Electrons

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Electrons


Electrons

  • The arrangement of electrons in an atom helps determine the properties and behavior of that atom


Electrons have special rules….

  • Electrons live in something called energy levels.

  • Only so many electrons can be in any energy level.

  • The electrons in the outer most energy level of any element are called valance electrons.


Nucleus

Contains protons & neutrons

1st energy level

Can hold up to 2 electrons

2nd energy level

Can hold up to 8 electrons

3rd energy level

Can hold up to 8 electrons


Atomic Models

  • This is the Bohr model. In this model, the nucleus is orbited by electrons, which are in different energy levels.


Bohr Model

Wave Model


The Wave Model

  • According to the current atomic model, electrons do not move about an atom in a definite path, like the planets around the sun.

  • Electron clouds rather than orbits

  • Electron clouds are a space where the electrons are likely to be found.


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