February 28, 2017

Homework Help: Science-Bohr Model 2

Posted by Sara on Tuesday, April 13, 2010 at 11:12pm.

how many shells r needed 4 the elements in each of the 1st rows of the periodic table.

Im kind of getting confused. When it says rows; does it refer to groups or no? I referred rows to the groups for my last question and came up with a pattern, but now I'm unsure of of myself.

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