Quantum Mechanics: The branch of physics dealing with the behavior of particles on a very small scale, such as atoms and subatomic particles. It's like the rules that govern how our city operates.
Atomic Structure:The arrangement of protons, neutrons, and electrons within an atom. This is like the layout or blueprint of our city.
Electron Configuration:The distribution of electrons in an atom or molecule's electron shells. It's like deciding which buildings go on which streets in our city.