Energy levels

Energy levels is the term used when treating electrons as waves/particles we can treat them as energy levels. The sub orbitals s p d and f are in ascending energy levels with electrons further away from the nucleus being in higher energy levels

Articles that Energy levels Appeared in...

The History of the Atomic Model: Heisenberg’s uncertainty principle

Now that the electron could be treated as a wave and as a particle, the work of Werner Heisenberg was important in quantifying this as a mathematical concept and furthering our understanding of the mysterious electron.

Transition Metals as Colored Compounds

Transition metals can form colored compounds when bonded to other elements due to the energy levels of the d block where electrons can be excited and move between energy levels.