- #1
Qube
Gold Member
- 468
- 1
Ok, I know that the S, P, D, and F represent blocks (groups of elements) on the periodic table.
I know that the numbers represent rows on the periodic table.
But what about the arrows? What's with the business of "increasing energy"? Why are the arrows slanted?
[PLAIN]http://i.min.us/icVeTS.png
I know that the numbers represent rows on the periodic table.
But what about the arrows? What's with the business of "increasing energy"? Why are the arrows slanted?
[PLAIN]http://i.min.us/icVeTS.png
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