Electron Configuration

Electron Configuration

1. Shell/Energy level

   • principle energy level - electrons within that shell have similar energy
     • electron further away = higher energy level
       • Sub-shells/Sub-levels
         • different energy level within a shell
           • same sub-shell = same energy
             • Atomic Orbitals
               • 2 electrons per orbital
                 • S
                   • 2 electrons
                 • F
                   • 14 electrons
                 • P
                   • 6 electrons
                 • D
                   • 10 electrons
                 • electrons fill orbitals with the lowest energy first
         • more subshells = increasing energy

2. arrangement of the electrons in the orbitals of an atom or ion

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