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 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.
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.
