_Atom _
By: Pc-duke
The evolution of the modern atom model took several years to evolved with
contribution from different scientists. One of these scientists, the first to
come up with a modern model of the atom is JJ Thomson. Thomson proposes that
the structure of an atom is mainly a sphere. A sphere that is filled with
positive electronic field and contains tiny particles that has a negative
charge. He called the tiny particles corpuscles . Thomsons model of the atom
is often refer as the plum pudding model because it has a consistency that
is all the same throughout the whole atom with a few plums to represent the
tiny corpuscles. Thomsons modern was widely accepted by people all over the
world. It was such an amazing discovery that his model led to other amazing
development of the modern model of the atomEarnest Rutherford who was JJ
Thomsons students, contributed greatly to the evolution of the modern model
of an atom. Rutherfords Gold Foil experiment was supposed to support and
better prove that Thomsons model of an atom was correct. Instead, Rutherford
discovered the existence of a nucleus in an atom. The Gold Foil experiment had
three founding; all were expected except for one. Rutherford found that a very
few alpha particles (1 out of 8000) was deflected by more than 90°. This
founding proves that at the center of the atom was a super dense nucleus and
totally destroys the Thomson model. Rutherfords model of the atom wasnt as
widely accepted as Thomsons model because there were still few people who
support the Thomson model no matter what.
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