Quantum Mechanics Complete Guide
Quantum Mechanics The study of the structure and behavior of atoms and molecules.
Aufbau Principle Electrons fill an element's orbitals in order of increasing energy.
Pauli Exclusion Principle When two electrons share an orbital, they must have different spin ...
Quantum Mechanics ✅The study of the structure and behavior of atoms and molecules.
Aufbau Principle ✅Electrons fill an element's orbitals in order of increasing energy.
Pauli Exclusion Principle ✅When two electrons share an orbital, they must have different spin values
(for example "up" and "down")
Principal energy level ✅The_____ is designated by the quantum number n or the quantum number
where n= 1, 2, 3, and 4
Electron configuration ✅The distribution of electrons among the orbitals of an atom. It describes where
the electrons are found and what energies they have.
Spectroscopic Notation ✅When you have an atom that has a large number of electrons it is easier to
use electron configuration in a compact form using superscript following the sub shell name to indicate
the number of electrons in each sub shell.
Orbital ✅In modern atomic theory, the area of probability of finding an electron. An orbital describes
the region of an atom with a high probability of finding electrons. Orbitals are apart of the Quantum
Mechanical Model.
Sub shell ✅Energy levels that contain orbitals.
Hund's Rule ✅When electrons are assigned to orbitals of equal energy, one electron at a time is added
to the empty orbitals before the second electron is added
Core electrons ✅Any electron that is not on the outer shell of an atom.
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