How do you find valence electrons on the periodic table?
Valence electrons can be tricky, but mostly, just check the element's group. Groups 1-2 and 13-18 are your friends here!
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Look at the group number! For main-group elements, the group number usually tells you the number of valence electrons. For example, elements in group 1 have 1 valence electron, group 2 have 2, etc.
In my chem class, I always checked the group number for main-group elements, and it worked like a charm. Simple and effective!
Just count the columns, unless we鈥檙e talking about transition metals; then it gets a bit more complex.
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