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


Electrons1

Electrons

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


Electrons have special rules

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.


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

Atomic Models

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


Electrons

Bohr Model

Wave Model


The 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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