Thomson’s results from experimenting with cathode rays cause a big change in scientific thought about atoms because his results gave the first evidence that atoms were made up of smaller particles. therefore the correct option is D.
What are atomic models?
The term "atomic models" refers to a number of models that are based on the atomic theory of the atom and are used to describe the configurations of subatomic particles inside the atom.
There are many types of atomic models proposed in past based on their individual assumptions and the experimentations
There are mainly five most widely accepted atomic models
John Dalton's atomic model which based on the assumption that all the entities of the universe are made up of the fundamental particle that is an atom.
The Plum Pudding Model, developed by J.J. Thomson, describes how subatomic particles are arranged by using the analogy of plum pudding, where the positive charge is uniformly distributed throughout and the negative charge is randomly sprinkled on top.
Rutherford's model explained why an atom has a nucleus by using the alpha particle bombardment experiment on a thin sheet of gold.
Niels Bohr's model explained the revolving nature of the electrons in the different shells around the nucleus of the atom.
The electron cloud model also referred to as the quantum model, is Erwin Schrodinger's explanation for the arrangement of subatomic particles.
As a result of Thomson's experiments with cathode rays, which provided the first proof that atoms were composed of smaller particles, the scientific community's understanding of atoms underwent a significant shift. Thus the correct answer is option D.
Learn more about the atomic models here
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