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Physics 9 Online
OpenStudy (anonymous):

how many valence electrons does Potassium have?

OpenStudy (anonymous):

The answer is one electron, but OpenStudy is meant for education, so please do watch the explanation video at http://www.youtube.com/watch?v=IUOylIeiXFk

OpenStudy (anonymous):

1, you can tell valence electrons by columns. just go from 1, 2, then skip to 13-18. Ignore the 1 from 13-18 meaning that 13=3 valence electrons

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