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What contribution did these scientists make to atomic models of the atom?
a. Dalton
b. Thomson
c. Rutherford
d. Bohr

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Answer:

Explanation:

Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.

In 1897, J.J. Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged. In addition, he also studied positively charged particles in neon gas.

Rutherford overturned Thomson's model in 1911 with his well-known gold foil experiment in which he demonstrated that the atom has a tiny and heavy nucleus. Rutherford designed an experiment to use the alpha particles emitted by a radioactive element as probes to the unseen world of atomic structure.

The Bohr model shows the atom as a small, positively charged nucleus surrounded by orbiting electrons. Bohr was the first to discover that electrons travel in separate orbits around the nucleus and that the number of electrons in the outer orbit determines the properties of an element.

Atomic model according to Dalton states that atoms are building blocks, Thomson discover about electrons, Rutherford gives idea about nucleus and Bohr about orbitals.

What is atomic models?

Atomic models are those models which gives about the information and characteristics or property of an atom.

  • According to the Daltons theory, atoms are the indivisible building blocks of any matter and all matter are composed of atoms. Atoms of an elements are always same and different element will have different atoms.
  • In his Thomson theroy, he discoverd the electron by the use of cathode rays which are negatively charged rays.
  • According to the Rutherford theory in an atom tiny and heavy nucleus is present and he justified the presence of nucleus by falling alpha particles emitted by a radioactive element on the atom.
  • In his model Bohr explained that atom is a small and positively charged nucleus which is surrounded by orbiting electrons. He also explained that electrons are present in differnt orbitals and responsible for the properties of the atom.

Hence contribution of each scientist about atomic model is discussed above.

To know more about atomic models, visit the below link:

https://brainly.com/question/2343919

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