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Electrons in Atoms - Coggle Diagram

- - - - example
        
        1s^2, 2s^2, 2p^6
  - - - D = Cloverleaf
      - P = Hourglass
      - F = More complex
      - S = Spherical
    - - which is
        
        S = 1, P = 3, D= 5, F = 7
    - - Spin-pair repulsion
        
        means
        
        Easier to remove electron from paired orbital
      - Electrons occupy separate orbitals if possible (minimize repulsion)
      - Electrons pair up when no empty orbitals (opposite spins)
      - Lowest Energy sub-shell filled first
  - - - which is
        
        S=2, P=6, D=10, F=14
    - - S = Sharp, P =Principal, D = Diffuse, F = Fundamental
  - - - Remove electrons from outer sub-shell
    - - gain electrons to complete outer shells
- - - - Rapid decrease between last and first element of next period (new shell, increased distance/shielding)
      - Slight decrease Be to B (2p vs 2s, slightly further, more shielding)
      - General Increase in IE1 (Increased Nucleus charge, constant shielding/instance)
      - Slight decreases N to O (spin-pair repulsion in oxygen's 2p orbital)
    - - IE1 decreases (increased distance, increased shielding outweigh nuclear charge)
      - Outer electron in successively higher principal quantum level