The electron configuration of an element is the distribution of its electrons within atomic orbitals.
Concept #1: Understanding Periodic Law
The arrangement of elements within the periodic table is based on increasing atomic mass.
Concept #2: The Auf Bau Principle
According to the Auf Bau Principle, electrons fill in lower energy orbitals before moving to higher energy orbitals.
Concept #3: The s,p, d, f sublevels and the Periodic Table
Concept #4: The Electron Configuration of Fluorine
By using the Periodic Table, you can determine the electron configuration of fluorine.
Concept #5: Hund's Rule
In a condensed electron configuration we shorten our amount of writing by including a noble gas.
Example #1: Write the condensed configuration for each of the following elements:
Co (27 electrons)
Se (34 electrons)
Practice: Write the condensed configuration for each of the following elements:
Ag (47 electrons)
Concept #6: Inner Core vs. Valence Electrons
Example #2: How many core (inner) and valence electrons are present in each of the following elements?
P Al Mn