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Theories of atomic structure, Bohr's Theory, image - Coggle Diagram
Theories of atomic structure
Daltons Atomic Theory
All matter is comprised of tiny, definite particles called atoms
Atoms are indivisible and indestructible
All atoms of particular element share identical properties, including weight
Atoms of different elements contain different mass
The flaws of his theory had some serious drawbacks. His postulation that atom is indivisible has since been proven incorrect. As we know today atoms can indeed be further subdivided into a serious of subatomic particles
Since dalton claimed that all atoms of the same element are the same in all respects. However as we have since discovered, an element can exist in different forms, called isotopes
Model of Atomic nuclei
String theory
Gabriele Veneziano is an Italian theoretical physicist. The first string theory to be discovered was his 1968 dual resonance model of the strong interaction. The string theory has strong and weak points. The Standard Model has been verified with incredible precision and is included in String Theory. String Theory accounts for all four known forces in one theory. The full theory does not have a satisfactory definition in all circumstances. Efforts to develop theories of particle physics based on string theory have been complicated by the theory of an enormous landscape of possible universes.
Niels Bohr proposed a theory for the hydrogen atom, based on the quantum theory that some physical quantities only take discrete values known as the Bohr Theory. It is a theory of atomic structure in which the hydrogen atom (Bohr atom ) is assumed to consist of a proton as the nucleus, with a single electron moving in distinct circular orbits around it, each orbit corresponding to a specific quantized energy state: the theory was extended to other atoms.
Rutherford's Hypothesis
The gold foil experiment showed that the atom consist of a small, massive, positively charged nucleus with the negatively charged electrons being at a great distance from the centre
Ruther did an experiment called the gold foil experiment it revealed that most of the alpha particles passed the gold foil but some particles got deflected
Rutherford's atomic model failed to explain the stability of electrons in a circular path
quantum chromodynamics
QCD is a theory about the action of a strong force. The quantum field theory of energy is similar to the QCD.
David Politzer, Frank Wilczek, and David Gross were the first to discover this prediction. The work they did was awarded a prize. The force between quarks does not diminish as they are separated.
The nuclear force is caused by the color force between quarks. The Greek word chroma "color" is applied to the theory of color charge.
Bohr's Theory
