Radiant Energy

1
Radiant Energy

• Electromagnetic Radiation
• Waves
• Amplitude
• Wavelength
• Frequency
• Speed of light
• visible spectrum

2
Quantum Theory

• Quanta
• Fixed amount of energy released by a particular
  substance.
• EHv
• H6.6262X10-34 Js
• vfrequency
• EEnergy

3
Photoelectric Effect

• Light
• Only certain wavelengths cause the ejection of
  electrons.
• Photons
• Absorbs an entire photon or none at all.
• Line spectrum
• Flame test

4
Bohr Model of the Atom

• Energy levels
• quantum numbers
• ground state
• excited state
• emission of light
• Heisenbergs Uncertainty Principle

5
Electron Orbitals

• Electron clouds
• Electron density
• atomic orbital
• principal energy levels
• sublevels
• s, p, d, f

6
Rules for Electron Configurations

• Fill lowest energy levels and orbitals first
• Each orbital can hold 2 electrons.
• Electrons in an orbital must have opposite spins.
• Aufbau Principle--Add electrons one at a time to
  the lowest energy orbitals until all the
  electrons are accounted for.
• Pauli Exclusion Principle--An orbital can contain
  2 electrons that must have opposite spins.

7
Rules for Electron Configurations

• Hunds Rule--Electrons occupy equal energy
  orbitals so that a maximum number of unpaired
  electrons results.