Define Pauli Exclusion Principle Flashcards

What do you know about the Pauli Exclusion Principle? The Pauli Exclusion Principle states that no two electrons can have the equivalent of four electronic quantum numbers in an atom or molecule. 

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Pauli Exclusion principle
It states that no two identical fermions may occupy the same quantum state simultaneously.
Subatomic particles
Subatomic particles include the atomic constituents electrons, protons, and neutrons.
Electrons
The electron is a fundamental subatomic particle that was identified and assigned the negative charge. Electrons are main cause of chemical bonding.
Protons
A proton is a subatomic particle with a positive fundamental electric charge
Neutrons
The neutron is a subatomic particle with no net electric charge and a mass slightly larger than that of a proton.
Electron configuration
In atomic physics and quantum chemistry, electron configuration is the arrangement of electrons in an atom, molecule, or other physical structure.
Energy levels
A quantum mechanical system or particle that is bound, confined spatially, can only take on certain discrete values of energy
Aufbau principle
The idea an atom is "built up" by progressively adding electrons. As they are added, they assume their most stable orbitals
Electron orbitals
The region in which an electron may be found around a single atom in a particular energy state
Nuclear symbol
The nuclear symbol consists of three parts: the symbol of the element, the atomic number of the element and the mass number of the specific isotope.
Lewis dot notation
Diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule.
Ions
An ion is an atom or molecule which has lost or gained one or more valence electrons, giving it a positive or negative electrical charge.
Hyphen notation
Writing an specific isotope. The number after the hyphen is the mass number
Isotopes
The same chemical element each having different atomic mass (mass number) because it does not have the same number of neutrons
Average atomic mass
The atomic mass of all isotopes averaged out based on their percentage