Posted by brenda on .
which of the following atomic numbers indicates the element with the highest valence number
- biology - SraJMcGin,
I think it'll be 10 because the innermost layer can only hold two electrons and the second inner layer can only hold 8 electrons. The definition of valence electrons is the number of electron on the outermost layer so it'll be 10 as 10 has 8 valence electrons.