Editing Homework For Retake Test For Electron Configuration And Atomic Mass

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<center>Homework for Retake for Electron Configuration and Atomic Mass</center> 
 
Answer all the question either in complete sentences and/or showing all work (for math questions). All work on separate sheet. 
 
1. Define a node and indicate how many are in each energy level? 
2. State the four Quantum Numbers and explain what they mean and give their symbols. 
3. Explain Balmer series with respect to the three requirements stated in the objectives. 
4. Give an example of a metal, non-metal and semi-metal element and explain how you can determine it from the periodic table. 
5. Give the electron configuration for the following elements and ion (also give number of valence electrons for s&p block elements): 
*Mg , Cu , Mo , Br1- , I , K1+ 
6. Define atomic mass and calculate the atomic mass of following elements: O and S (by using exact mass of each ion)and H and N (by using mass number). Information on mass number, exact mass and percent abundance can be found in your notes (handout on this information).

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