4 posts • Page 1 of 1
The 3d subshell is higher in energy than the 4s subshell. There is actually a slight difference between energy levels 3 and 4, so that the energy in 4s is just barely below 3d. As you get to higher energy levels, the vague differences in energy also causes the 4f orbitals to begin in the 6th energy level/period (just another example of this kind of situation). Hope this helps!
Who is online
Users browsing this forum: No registered users and 1 guest