1. QUANTUM NUMBERS n = PRINCIPAL ENERGY LEVEL  VALUES: 1, 2, 3, 4, 5, 6, 7 l = ANGULAR MOMENTUM  VALUES: 0, 1, 2, 3, ….n-1  NOTE: 0  s, 1  p, 2  d, 3  f m = MAGNETIC  VALUES: + l …2, 1, 0, -1, -2, …- l m s = SPIN  VALUES: +1/2 OR –1/2

2. Chapter 6 - Continued

3. MODELS OF THE ATOM 1. ELECTRON DIAGRAM 2. ELECTRON CONFIGURATION

4. KEYS TO MODELS ORDER OF ORBITALS 1s 2s 2p 3s 3p 4s 3d 4p 5s etc. & NUMBER OF EACH TYPE OF ORBITAL s - TYPE ORBITALS 1 EACH p - TYPE ORBITALS 3 EACH d - TYPE ORBITALS 5 EACH f - TYPE ORBITALS 7 EACH

5. EXAMPLES Mg F Ne Ar

6. THE QM MODEL & THE PERIODIC TABLE ELECTRON DIAGRAM ELECTRON CONFIGURATION VALENCE ELECTRONS (PAIRED & UNPAIRED) GROUPS PERIODS NOBLE GASES OXIDATION NUMBERS

7. The Periodic Table

8. Subshell Location on the Periodic Table

9. There is a specific number of electrons in each subshell block. 1 s 1 s 2 p 1 p 2 p 3 p 4 p 5 p 6 2 3 d 1 - d 10 4 5 6 f 1 - f 14 Subshell Blocks

10. FOR AN ATOM OF SULFUR DRAW ELECTRON DIAGRAM DRAW ELECTRON CONFIGURATION WHAT IS # OF VALENCE ELECTRONS? HOW MANY VALENCE ELECTRONS ARE UNPAIRED? HOW MANY PAIRS OF VALENCE ELECTRONS? IN WHAT PERIOD IS THE ELEMENT? IN WHAT GROUP IS THE ELEMENT? WHAT ARE THE QUANTUM NUMBERS OF THE ELECTRONS IN THE 3p ORBITALS?

11. FOR AN ATOM OF PHOSPHORUS DRAW ELECTRON DIAGRAM DRAW ELECTRON CONFIGURATION WHAT IS # OF VALENCE ELECTRONS? HOW MANY VALENCE ELECTRONS ARE UNPAIRED? HOW MANY PAIRS OF VALENCE ELECTRONS? IN WHAT PERIOD IS THE ELEMENT? IN WHAT GROUP IS THE ELEMENT? WHAT ARE THE QUANTUM NUMBERS OF THE ELECTRONS IN THE 3p ORBITALS?

12. EXAMPLES WRITE THE ELECTRON DIAGRAM & ELECTRON CONFIGURATION FOR AN ATOM OF He Li Ne F Na Cl Ar