Question 278057 valence electron are those in the highest energy level _ and _ orbitals only October 20, 2022/by admin https://papershelpdesk.com/wp-content/uploads/2021/05/Logo-300x75.png 0 0 admin https://papershelpdesk.com/wp-content/uploads/2021/05/Logo-300x75.png admin2022-10-20 00:30:472022-10-20 00:30:47Question 278057