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miiizpiiink18
Oct17-09, 02:23 PM
Q: Why is the 11th electron of the sodium atom located in the third energy level rather than in the second energy level?

xD
ideasrule
Oct17-09, 03:28 PM
Why? Because.
Redbelly98
Oct17-09, 06:01 PM
Each energy level holds a certain number of atoms. These numbers should have been discussed in class lectures or the textbook.