Uploaded August 2025 | Updated September 2026, 2 weeks ago
Electron Configurations
Dr. DeBacco
Electron Configurations: Mapping the Atom’s Electrons
Electron configuration is a way to describe how electrons are arranged around the nucleus of an atom.
It’s like a seating chart for electrons, showing which “orbitals” they occupy based on energy levels.
Writing Electron Configuration
You will need to match the elements…
Energy Level
Type of Orbital
Number of electrons in the orbital
Energy Level (Periods on the Periodic Table)
Type of Orbital (What Block is the Element in?)
Number of Electrons in the Orbital
Electron Configuration of fluorine: 1s22s22p5
Examples
Carbon (C): 1s² 2s² 2p² → p-block element
Iron (Fe): [Ar] 4s² 3d⁶ → d-block element
Uranium (U): [Rn] 7s² 5f³ → f-block element
Link to Lecture Slides: drive.google.com/file/d/1RfQuTmAdurnPr0ngi00dSJAyhYL0YKqk/view?usp=drive_link
*Due to the description character limit the full work cited for "Electron Configurations" can be viewed at... docs.google.com/document/d/13EiFwJZaK4n_qRJWCU_IMvb_H9pfGHsa/edit?usp=drive_link&ouid=104237452697237972847&rtpof=true&sd=true
Electron Configurations
Dr. DeBacco
Electron Configurations: Mapping the Atom’s Electrons
Electron configuration is a way to describe how electrons are arranged around the nucleus of an atom.
It’s like a seating chart for electrons, showing which “orbitals” they occupy based on energy levels.
Writing Electron Configuration
You will need to match the elements…
Energy Level
Type of Orbital
Number of electrons in the orbital
Energy Level (Periods on the Periodic Table)
Type of Orbital (What Block is the Element in?)
Number of Electrons in the Orbital
Electron Configuration of fluorine: 1s22s22p5
Examples
Carbon (C): 1s² 2s² 2p² → p-block element
Iron (Fe): [Ar] 4s² 3d⁶ → d-block element
Uranium (U): [Rn] 7s² 5f³ → f-block element
Link to Lecture Slides: drive.google.com/file/d/1RfQuTmAdurnPr0ngi00dSJAyhYL0YKqk/view?usp=drive_link
*Due to the description character limit the full work cited for "Electron Configurations" can be viewed at... docs.google.com/document/d/13EiFwJZaK4n_qRJWCU_IMvb_H9pfGHsa/edit?usp=drive_link&ouid=104237452697237972847&rtpof=true&sd=true
