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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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Presentation Transcript
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.
slide4

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.
slide6

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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