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Use the periodic table in your agenda to fill in the chart.
Element Metal, Nonmetal, or
Metalloid?
Neon (Ne)
Sodium (Na)
C...
ReviewReview
Metals
Nonmetals
Metalloids
Electron ConfigurationElectron Configuration
Electrons orbit around the
nucleus
Form a “cloud” around the
nucleus
The “...
Energy LevelsEnergy Levels
 First shell is closest to the
nucleus
 Holds up to 2 electrons
 The second shell holds up
t...
Energy LevelsEnergy Levels
The third shell holds up
to 18 electrons
There are more than 3
shells
Energy LevelsEnergy Levels
No. of shells depends on the no.
of electrons
Each shell must be full before a
new one forms
...
Valence Electron(s)Valence Electron(s)
Electron(s) in the outer most
shell of an atom
The Group Number tells you
the num...
Valence Electron(s)Valence Electron(s)
Group 1, 1 valence
electron
Group 13?
3
Determines an elements
reactivity
Octet RuleOctet Rule
Elements need 8
valence electrons to be
stable
Or their outer shell is
full
Argon Atom
8 valence electrons = stable
Outer shell is full = stable
Electron Configuration
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Electron Configuration

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Transcript of "Electron Configuration"

  1. 1. Use the periodic table in your agenda to fill in the chart. Element Metal, Nonmetal, or Metalloid? Neon (Ne) Sodium (Na) Chlorine (Cl) Silicon (Si) Calcium (Ca) Gold (Au) Arsenic (As) Nonmetal Metal Nonmetal Metalloid Metal Metal Metalloid
  2. 2. ReviewReview Metals Nonmetals Metalloids
  3. 3. Electron ConfigurationElectron Configuration Electrons orbit around the nucleus Form a “cloud” around the nucleus The “cloud” has “layers” “Layers” = energy shells
  4. 4. Energy LevelsEnergy Levels  First shell is closest to the nucleus  Holds up to 2 electrons  The second shell holds up to 8 electrons
  5. 5. Energy LevelsEnergy Levels The third shell holds up to 18 electrons There are more than 3 shells
  6. 6. Energy LevelsEnergy Levels No. of shells depends on the no. of electrons Each shell must be full before a new one forms The Period Number tells you how many energy shells an atom has
  7. 7. Valence Electron(s)Valence Electron(s) Electron(s) in the outer most shell of an atom The Group Number tells you the number of valence electron(s)
  8. 8. Valence Electron(s)Valence Electron(s) Group 1, 1 valence electron Group 13? 3 Determines an elements reactivity
  9. 9. Octet RuleOctet Rule Elements need 8 valence electrons to be stable Or their outer shell is full
  10. 10. Argon Atom 8 valence electrons = stable Outer shell is full = stable
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