What is the energy of a photon from the violet portion of a rainbow if its frequency is 7.23 x 1014

1
What is the energy of a photon from the violet
portion of a rainbow if its frequency is 7.23 x
1014 Hz?
2
Electron Configuration

• describes where electrons are located and the
  energies they possess.

3
Valence electrons

• The electrons in the outermost energy shell
• Most reactive electrons

4
Noble gases

• Have a full valence shell of 8 electrons (2 for
  He)
• stable

5
Electron Configuration

• Sodium 1s2 2s2 2p6 3s1

Ne 3s1
6
Energy levelslow ? high energy

• 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s
  5f 6d 7p

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The Diagonal Rule

• 1s2
• 2s2 2p6
• 3s2 3p6 3d10
• 4s2 4p6 4d10 4f14
• 5s2 5p6 5d10 5f14 . . . .
• 6s2 6p6 6d10 6f14 . . . .
• 7s2 7p6 7d10 7f14 . . . .

8
Electron dot structure

• Shows the valence electrons as dots around the
  symbol

9
Lewis dot diagram