-
400 BCE
Democritus
The Democritus found out that the atoms are not all the same, they are eternal, and always moving. He made theory on this to explain why and how atoms were so small and what they ere about. -
John Dalton: Solid Sphere Model
He created the very first atomic theory. Dalton view atoms as tiny solid balls. He found the atomic weight and -
J.J Thompson: The Plum Pudding Model
He shows that atomic made of even smaller things. His atomic model was known as the "raisin bun model." -
Rutherford: The Nuclear Model
He discovers protons and nucleus. He also showed that the atoms have (+) particles in the center, and are mostly empty space. -
Niels Bohr: The Bohr (Planetary) Model
He imported the Rutherford model. He also proposed that electrons move around the nucleus It so in specific layers or, shells. -
Erwin Schrodinger: Quantum Mechanics Model
Erwin contributed were the moving mechanical and quantum mechanics. Led him to quantum mechanical. Schrödinger used mathematical equations to describe the likelihood of finding an electron in a certain position. This atomic model is known as the quantum mechanical model of the atom -
The Atoms we use Today
The Bohr model encapsulates the modern understanding of the atom. This model is often depicted in artwork showing a central atomic nucleus and oval lines representing the orbits of the electrons. It si divided into three things Protons, Electrons, and Neutrons
