Electron Configurations
Write the electron configuration for Helium.
1s2
Draw a Bohr Model for Hydrogen.
1 ring, 1 electron
What does it mean for an electron to be in an "excited state"?
The electron absorbed a specific amount of energy and is temporarily in a higher energy level than it's ground state.
Write the Noble Gas configuration for Barium.
[Xe]6s2
What element has a Bohr model with two orbitals and 7 valence electrons?
Fluorine
What is an electron's ground state?
An electron's ground state is the stable shell that an electron can be found in.
Each colored line in an atomic emission spectrum corresponds to:
An electron transition at that specific energy OR a specific wavelength of light.
Write the long version and the Noble Gas configuration for Ytrium.
1s22s22p63s23p63d104s24p64d15s2
[Kr]4d15s2Draw a Bohr Model for Aluminum.
3 rings, 13 electrons, 3 valence electrons
What is a Bohr model? What is incorrect about the Bohr model?
A model of the atom that shows electrons and their various energy levels. The Bohr model shows electrons orbiting around the nucleus in a circle, when we now know they do not follow a distinct path.
Which element has four emission spectra lines?
Write the long version and the Noble Gas configuration for Uranium.
1s22s22p63s23p63d104s24p64d104f145s25p65d105f46s26p67s2
Draw a Bohr Model for Calcium.
What is the Shell Model?
The Shell Model shows where electrons are likely found based on probability. There are subshells for each energy level (or shell) that electrons fill completely before filling the next shell.
An electron must jump to a higher energy level, and then release that energy as a photon when it returns to it's ground state.