A handy of free and printable energy level diagrams are available in high definition and quality! Energy level diagrams can be useful for visualizing the complex level structure of multi-electron atoms. Forms of such diagrams are called Grotrian diagrams or term diagrams in various parts of the literature. While the energy level diagram of hydrogen with its single electron is straightforward, things become much more complicated with multi electron atoms because of the interactions of the electrons with each other.
The energy level diagram posted above is the activation diagram. Chemists sometimes use an energy level diagram to represent electrons when they’re looking at chemical reactions and bonding. An energy level diagram is more useful and easier to work with than quantum numbers in the quantum mechanical model. They use the energy level diagram as well as electron configuration notation to represent which energy level, subshell, and orbital are occupied by electrons in any particular atom. There are other kinds of energy level diagrams which are posted in the following figures.
So, this is the know-how. Suppose you want to draw the energy level diagram of oxygen. You look on the periodic table and find that oxygen is atomic number 8. This number means that oxygen has 8 protons in its nucleus and 8 electrons. So you put 8 electrons into your energy level diagram. The followings are the energy level diagram of laser and sodium.
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