Electromagnetic Spectrum
What is the region of the electromagnetic spectrum that we can see called?
Visible Light
What does “h” stand for in the equation E = hf (name it and state the number)
Planck's constant
6.626 x 10-34
Is the Bohr model our most current model of the atom? Why or why not?
No, only worked for Hydrogen atom (electrons don't travel in specific orbits)
What is meant by “atomic orbitals?”
Regions where electrons are likely to be found (NOT specific rings)
Draw the lines & arrows notation for magnesium
1s<>
2s <>
2p<><><>
3s<>
What is the relationship between wavelength and frequency for electromagnetic waves?
Inverse relationship (one goes up the other goes down)
What is a photon?
Particle of light
If an electron gains energy, does it move closer to the nucleus or further from it?
Further from nucleus
Compare the Bohr model and quantum model of the atom.
Bohr model = orbits
Quantum model = orbitals
DOUBLE JEOPARDY (You can wager up to however many points you currently have).
Don't pair up electrons in orbitals of equal energy until all have at least one electron
Which is lower energy: radio waves or visible light?
Calculate the energy of a photon with a frequency of 6 x 1014 Hz.
E = 3.9756 x 10 -19 J
In the Bohr model, electrons move in circular _______.
Orbits
Who developed an equation in 1926 to help describe the location of electrons in more complex atoms?
Schrodinger
18
Name 5 key regions of the electromagnetic spectrum.
Radio, Microwave, IR, Visible Light, UV, X-rays, Gamma rays
The photoelectric effect provides evidence that light can act as a ______.
particle
What does it mean that electrons are quantized?
Exist as specific energy levels (not continuous)
De Broglie proposed that electrons should be considered as _________.
Waves
Write the electron configuration for sulfur
1s22s22p63s23p5
How does the wavelength of electromagnetic radiation relate to energy?
Shorter wavelength = higher energy
Solve for the energy of a wave with a wavelength of 500 nm.
3.98 x 10-19
Discuss how the emission-line spectrum relates to Bohr’s model.
Lines shown on spectra are from electron jumps of electrons (electrons at set energies in Bohr model)
Describe the Heisenberg Uncertainty Principle.
Can't know BOTH the location and velocity of an electron at any given time.
Write the NOBLE GAS shortcut electron configuration for Iodine.
[Kr]5s24d105p5