Retest on Atomic Theory  * Quiz  (10 mks) Oct.25 !

History-  Greeks, Dalton, Crookes, Thomson, Rutherford,                    Bohr,

              Quantum Mechanics – Shroedinger, Pauli,                                                               Heisenberg

Spectroscopy – emission versus absorption

UNIT 2 (Chapter 10)  Test and Main Points

TEST  THURSDAY OCT. 27^TH

Atomic theory

Quantum Mechanical Model of the atom

>Wave theory

>Spectroscopy

>Planck’s equation

>E.M.R.

Orbital theory-

Bohr’s model explained spectra for simple atoms such as H with one electron but did not explain multi-electron elements.  Mathematical equations are used to describe a theoretical position for the electron.

Quantum Mechanics – waves, probability, cloud orbitals

Quantum numbers – four numbers used to describe the electron location

1^st      n        energy level

2^nd     l         shape (s, p, d, f)

3^rd     m_l      orientation (x,y,z)

4^th     m_s     spin  (2 electrons per orbital +-   ½)

Electron configuration – (notes)

Orbital Diagrams

Electron configuration notation

     p.300 # 2-6

     worksheets