3.8-3.10

3.8-3.10

1. 3.8

   • Atomic orbitals
     • s Orbitals
       • s sub shell contains one s orbital
     • p Orbitals
       • each p sub shell contains 3 p orbitals
     • d Orbitals
       • higher principle quantum #
     • f Orbitals
       • atomic #s greater than 57

2. 3.9

   • energy of atomic orbitals
     • electrons in orbitals have opposite charges
       • Pauli exclusion principle
   • Aufbaus principle
     • can determine an elements electron configuration by steps
   • Hund's Rule
     • Stable arrangement of elctrons- same spin ^
   • Rules for writing electron configuration
     • 1. electron will reside in the available orbitals of the lowest possible energy
     • 2. each orbital can accommodate a maximum of 2 electrons
     • 3. electrons will not pair in degenerate orbitals if an empty orbital is available
     • 4. orbitals will fill in the order. simple way to remember

3. 3.10 electron configuration and periodic table

   • you can use noble gas core except Hydrogen and Helium