ScienceBohr Model 2
posted by Sara .
is there a pattern betweent he # of electrons in the outers shell of an element and its position along the row in the Perioidic table. whats the pattern?
I know that there is a pattern, but I'm unable to explain. I looked at the first group of elements which included Hydrogen, Lithium, Sodium, etc. Their outer shell only contains one electron.
How can I explain better?

Group 1 has 1 electron in the outer shell.
Group 2 has 2 electrons in the outer shell.
Group 3 has 3 electrons in the outer shellS.(includes 3d and 4s)
Group 4 has electrons in the outer shellS (includes 3d and 4s).
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