Aim: How are an atom’s electrons configured?Electromagnetic Spectrum -the total range of light including gamma rays, x-rays, ultraviolet, visible, infrared, microwaves, and radio waves.

Orbital- region where electron can most likely be found.

Ground state- when electron is in a state of lowest possible energy

Excited state- when electron acquires additional energy. An electron can only absorb a discrete, or fixed amount of energy that would allow it to move to a higher energy level.

Aim: How are an atom’s electrons configured?

Emission Spectrum- visible light produced by electrons. Each atom has its own distinct pattern of emission lines (or bright line spectrum), and these spectra are used to identify elements.

Electron configuration-distribution of electrons

Aim: How are an atom’s electrons configured?

Essential Questions:• Explain how the wavelengths of light emitted

by an atom provide information about electron energy levels.

• How did Bohr explain the presence of line-emission spectra?

• Compare the quantum models of Rutherford an Bohr.

Aim: How are an atom’s electrons configured (arranged?)

Potassium-39• Electron configuration:• Number of electron shells (energy levels):• Valence shell (energy level):• Number of valence e-:• Isotopic notation:

Draw Bohr’s atomic model for potassium-39.Indicate appropriate number of particles in the nucleus, and electrons (-) in the electron shells (energy levels.)

Aim: How are an atom’s electrons configured (arranged?)

Calcium-39• Electron configuration:• Number of electron shells (energy levels):• Valence shell (energy level):• Number of valence e-:• Isotopic notation:

Draw Bohr’s atomic model for calcium-39.Indicate appropriate number of particles in the nucleus, and electrons (-) in the electron shells (energy levels.)

Aim: How are an atom’s electrons configured (arranged?)

Bromine-80• Electron configuration:• Number of electron shells (energy levels):• Valence shell (energy level):• Number of valence e-:• Isotopic notation:

Draw Bohr’s atomic model for bromine-80.Indicate appropriate number of particles in the nucleus, and electrons (-) in the electron shells (energy levels.)

Aim: How are an atom’s electrons configured (arranged?)

Arsenic-75• Electron configuration:• Number of electron shells (energy levels):• Valence shell (energy level):• Number of valence e-:• Isotopic notation:

Draw Bohr’s atomic model for arsenic-75.Indicate appropriate number of particles in the nucleus, and electrons (-) in the electron shells (energy levels.)

Aim: How are electrons of an atom configured?View “Quantum Leap” and answer Essential Questions below:

• How do particles behave at the quantum level?• State Bohr’s explanation for spectral lines produced when

gases are heated.• Distinguish between quantum mechanics and classical

mechanics.• What do probability waves predict?• Distinguish between Bohr’s ideas and Einstein’s ideas. • What is entanglement theory?• Do you think “teleporting” is possible? Explain.