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Author Question: What are the Valence Electrons of all the Elements in the Periodic Table? (Read 805 times)

leilurhhh

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on: Sep 20, 2013
I need help in Chemistry and I don't know how to determine all the valence electrons in the periodic table.

I need the equation or explanation on how to find it and give me all the answers to every element


mydiamond

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Reply #1 on: Sep 20, 2013
The number of valence electrons is given by the GROUP NUMBER which runs along the top of the periodic table. Oxygen, in group VIA, for example, has 6 valence electrons. Magnesium, in group IIA, has 2.


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tth

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Reply #2 on: Sep 20, 2013
Group number will generally tell you how many valence electrons in the element. All of the elements in a single group will have an identical number of valence electrons. All of the Group 18 elements (noble gases) will have full outer main energy levels, thus no valence electrons. Transition metals will always have 2 valence electrons.


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