Name: __________________________________________ Date: ___________________ Period: ___________
Electron Configuration & Orbital Diagram PPT note taking guide
1. Electron Configuration
 Shows the arrangement of _____________________ in an atom.
2. Orbital Diagram
 Another way of writing the ___________________ _____________________.

An _________________ is a ____________________ space for an ____________________.

Atoms can have ________________ potential _____________________.

________________________ are represented by ____________________ grouped by sublevel
with small _______________________ indicating the _______________________.
3. Pauli Exclusion Principle
 An atomic orbital can hold a ____________________ of _____ electrons and those 2 electrons
must have _________________ spins.

An ________________ is represented by an ________________.

________________ is represented by the _____________ facing _____ or ______________.
4. Hydrogen
 H has an atomic number of _____, so it has _____ electron available to place in the orbital diagram.

Configuration: _________________________ Orbital Diagram:
5. Helium
 He has an atomic number of _____, so it has ____ electron available to place in the orbital diagram.

Configuration: _________________________ Orbital Diagram:
6. Aufbau Principle
 Electrons are placed in the _________________ energy level ______________________.

Write the order of energy levels from lowest energy to highest energy.
7. Lithium
 Li has an atomic number of _____, so it has ____ electron available to place in the orbital diagram.

Configuration: _________________________ Orbital Diagram:
8. Beryllium
 Be has an atomic number of _____, so it has ____ electron available to place in the orbital diagram.

Configuration: _________________________ Orbital Diagram:
9. Boron
 B has an atomic number of _____, so it has ____ electron available to place in the orbital diagram.

Configuration: _________________________ Orbital Diagram:
10. Hund’s Rule
 When filling _______________ other than _____, __________________ are placed in individual
orbitals ______________, before they are __________________ up.
11. Carbon
 C has an atomic number of _____, so it has ____ electron available to place in the orbital diagram.

Configuration: _________________________ Orbital Diagram:
12. Nitrogen
 N has an atomic number of _____, so it has ____ electron available to place in the orbital diagram.

Configuration: _________________________ Orbital Diagram:
13. Oxygen
 has an atomic number of _____, so it has ____ electron available to place in the orbital diagram.

Configuration: _________________________ Orbital Diagram:
14. Organization of Orbitals
 The periodic table has _________________ the _____________________.

The “_____” orbitals

The “_____” orbitals

The “_____” orbitals

The “_____” orbitals

The first _______ is Principal Energy Level _____.

The second ________ is Principal Energy Level _____.

Principal Energy Level _______ begins in the _____ row.

Principal Energy Level _______ begins in the _____ row.
15. and so the pattern continues…
16. Sublevels
 The “_____” sublevel can hold _____ electrons.


The “_____” sublevel can hold _____ electrons.
2 electrons in each of the _____ orbitals (_____, _____, _____)

The “_____” sublevel can hold _____ electrons.

2 electrons in each of the _____ orbitals.

The “_____” sublevel can hold _____ electrons.

2 electrons in each of the _____ orbitals.
17. Practice Problems
 Fluorine: Configuration: _________________________ Orbital Diagram:

Magnesium: Configuration: _________________________ Orbital Diagram:
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Sulfur: Configuration: _________________________ Orbital Diagram:

Potassium: Configuration: _________________________ Orbital Diagram:
18. Noble Gas Configuration
 Is an ___________________ version of ____________________ ____________________________.

Uses the _______________ __________ that _______________ (comes before) the element, then
the __________________ ______________________ that comes after the noble gas.

Used for elements with larger atomic numbers.

Example: Nitrogen: Noble Gas Configuration: _______________ Orbital Diagram:
19. Valence Electrons
 Is important because it shows the ___________________ _________________ present in an atom.

Nitrogen has an atomic number of _____. It has 7 total ____________________. If you look at the
electron configuration, you can count _____ electrons.

But if you look at the _________________ ____________ Configuration, you can count 5 electrons.

These _____ electrons are the ________________ ___________________, the electrons found in
the __________________ energy level.

The periodic table organizes valence electrons.
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The number of ______________ electrons are written above each ______________ in the diagram.
20. Practice Problems
 Iron: Noble Gas Configuration: _______________ Orbital Diagram:

Tin: Noble Gas Configuration: _______________ Orbital Diagram: