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