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Rutherford devised an experiment where alpha particles were fired at a very thin sheet of gold leaf. His detectors were at first place behind the foil and a large number of protons were detected as flashes of light on the detector. Slowly they were brought to the side of the foil and still his staff were detecting protons. He then placed the detector beside the proton 'gun' and very occasionally detected a particle. His hunch had paid off. He likened this event as 'firing a 7 inch shell at a piece of tissue paper and it coming straight back'. What he had found was the Nucleus of an atom of gold. The positively charged proton had met with the positively charged nucleus of the gold atom and it had been rebounded due to like charges repelling . Looking at his data he reasoned that the Nucleus was surrounded by a relatively large void before the electron cloud was encountered. He likened the relative size of the atomic nucleus to the distance to the electrons as the 'fly in the cathedral'. Neils Bohr went on to further refine this model.
What else can I help you with?
Did bohr proove that atoms exist?
Bohr's contribution to chemistry and physics regarding atoms was a theory on the atomic structure refining rutherfords model. Atoms were already shown to exist by others. Dalton is perhaps the most influential of the early pioneers.
When was Mendeleev's contribution to the atomic theory published?
Mendeleev's contribution to the atomic theory was published in 1869 in his book "Principles of Chemistry." In this work, he introduced the periodic table of elements, organizing them by atomic weight and properties, and leaving gaps for undiscovered elements.
What contribution to atomic theory was made by Geiger and Marsden in their gold foil experiment?
Geiger and Marsden's gold foil experiment provided evidence for the existence of a dense nucleus at the center of an atom, based on the unexpected deflections of alpha particles being scattered at large angles. This supported the model proposed by Ernest Rutherford, which revolutionized atomic theory by introducing the concept of a small, positively charged nucleus surrounded by negatively charged electrons.
What is the contribution of Anaxagoras in the atomic theory?
Aristotle held the view that there were five elements: fire, water, air, earth, Aether. Fire was hot. Water was wet. Air was light. Earth was cool and heavy. Aether was divine. Aristotle has since been proven wrong in this area because we have zoomed in and broadened our views of the elements.
Whose ideas led to the atomic theory of matter?
The atomic theory of matter can be attributed to the ideas proposed by the ancient Greek philosopher Democritus. He hypothesized that all matter is composed of indivisible and indestructible particles called atoms, which differ in shape, size, and arrangement. Democritus' atomic theory laid the foundation for modern atomic theory.
How was Thomsons atomic theory different from Rutherfords atomic theory?
According to Thomson's atomic theory, the mass of an atom was special evenly throughout its volume. Errest Rutherford's experiment proved this wrong.
What were Lord Ernest Rutherfords Accomplishments?
he found faults in the atomic theory of jj Thompson
What was Dalton's major contribution to science?
Atomic Theory
What was the contribution of j Berzelius's in the atomic theory?
That the cake is a lie.
What was benjamen franklin's contribution to the atomic theory?
Benjamin Franklin's contribution to the atomic theory was his proposal that electricity was a fundamental force that could be understood through atomic models. He conducted experiments with electricity and proposed the idea of positive and negative charges, which later contributed to the development of the atomic theory.
What was Werner Heinsberg's contribution to the atomic theory?
The most important contribution of Werner Heisenberg was the discovery of the uncertainty principle.
What was Lavoisier's contributions to the development of the modern atomic theory?
Antoine Lavoisier was a French nobleman and chemist. His contribution to the development of the modern atomic theory was his idea of the possibility of an Atomic Mass.
What was Antoine-laurent lavoiser's contribution to atomic theory?
he contributed by creating milk
What was the main contribution of de Broglie to atomic theory?
See the link below
What is the rutherfords atomic model?
Because Joel is the man
What is the contribution of thales of miletus in the development of atomic theory?
The contribution of anyone prior to about 1600 to the development of atomic theory might as well be "nothing whatsoever." Democritus and/or Leucippus contributed the name "atomos", but not much else; they were wrong about nearly every detail. John Dalton is just about the earliest scientist to have had any significant contribution to atomic theory, and most of what we now consider atomic theory was developed since about 1900.
Michael Faraday contribution on the atomic theory?
he helped the creator of electrons and the studier of chemistry
