Quantum Numbers & Electron Configuration

• Electron Configuration


  refers to the distribution of electrons in each shell and subshell of an element represented by a coefficient, letter, and exponent
• Heisenberg Uncertainty Principle


  states that it is impossible to determine the energy and exact location of an electron at the same time
• energy level

  it describes the location of an electron in the electron cloud
• magnetic quantum number


  it describes the orientation of the orbital in space
• 7


  the number of the electrons in the outermost shell
• angular momentum quantum number


  it describes the general shape or region an electron occupies
• periods / series


  the rows of the periodic table of elements
• representative elements


  the elements found in the s and p blocks are collectively called as ___
• atomic number


  the total number of electrons in an element under normal conditions is also referred to as ___
• valence electrons

  the configuration found in the last shell of the atom