Electron Configuration

Sub-Shell and Maximum Electron

Sub-Shell Maximum Electron
s 2
p 6
d 10
f 14

How to Read / Order

  1. Start from the top-most arrow
  2. Follow the direction of the arrow. For example;
    1. 1s, 2s, 2p, 3s
  3. Exponent the electron with maximum number of sub-shell until the total of exponents is equals to Atom Number.
  4. If the total is more than Atom Number, subtract the the last electron's exponent to make the total equals to the atom number.

Examples

1s2, 2s2, 2p6, 3s2, 3p2
1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p3

Electron Configuration Based on Shell

an atom figure with shell labels (Oxygen)

Maximum Electron

   
     
     

How to Determine Electron Count

  1. Coming soon!

Examples