3s
3px    3py    3pz
                     2px    2py    2pz
2s     
1s    
                                                                              
Chemist Shorthand:   1s    2s   2p    3s    3p  
Select an Element:    Spectroscopic Notation Table
The total number of electrons represented is:      
Interactive e-1 Confguration Answers (Shockwave)         Electron Configurations and the Periodic Table
Interactive Electron Configurations for 1st, 2nd, and 3rd Period Elements

Atomic Orbital Details:
1s Orbital X-axis
1s Orbital Y-axis

2s Orbital X-axis
2s Orbital Y-axis

3s Orbital X-axis
3s Orbital Y-axis
2px Orbital X-axis
2px Orbital Y-axis
2py Orbital X-axis
2py Orbital Y-axis
2pz Orbital X-axis
2pz Orbital Y-axis
3px Orbital X-axis
3px Orbital Y-axis
3py Orbital X-axis
3py Orbital Y-axis
3pz Orbital X-axis
3pz Orbital Y-axis