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J.J. Thomson while performing an experiment noticed the canal rays and said that they were electrically negative in nature and that was due to negatively charged particles. He called these negatively charged particles electrons.
Since, at that time many speculations were being done regarding the structure of an atom, he provided his model of an atom which is commonly called the "Plum-pudding model or Watermelon model".
Since, the atoms were electrically neutral, therefore he said that the electrons were uniformly distributed in a positively charged shell just like there are seeds in a watermelon.
But his speculations and model were rejected after Rutherford's 'Gold foil Experiment'.
What else can I help you with?
What did J. J. Thomsons experiments provided evidence about an atom?
J. J. Thomson's experiments provided evidence for the existence of electrons as subatomic particles within the atom. This led to the plum pudding model of the atom, where electrons were embedded in a positively charged "pudding." These experiments laid the foundation for our understanding of atomic structure.
Which 5 guys created the atom?
John Dalton, J.J. Thomson, Ernest Rutherford, Niels Bohr, and Erwin Schrödinger were all instrumental in the development of our understanding of the atom. Each of them made significant contributions to the atomic theory and the structure of the atom.
What instrument did Thomson use in the making of his model of the atom?
Thomson hadn't an instrument; this model is only a hypothesis.
What scientist said there are small negatively charged particles inside an atom?
J.J. Thomson proposed the existence of small negatively charged particles inside an atom, which he called electrons. This discovery was a crucial development in understanding the structure of atoms and led to the plum pudding model of the atom.
What are the postulates of Joseph J Thomson?
Joseph J. Thomson's postulates included the idea that electrons are negatively charged particles, they have a much smaller mass compared to atoms, and they are uniformly distributed within the atom. These postulates were part of Thomson's plum pudding model of the atom.
What evidence did J.J Thomson provided about this structure of an atom?
J.J. Thomson provided evidence about the structure of an atom through his discovery of the electron using cathode ray tubes. His experiments showed that electrons are negatively charged particles and are present in all atoms, leading to the development of the plum pudding model of the atom.
Who provided the evidence that atom contains subatomic particle?
It was J. J. Thomson (Joseph John Thomson)
What did J. J. Thomsons experiments provided evidence about an atom?
J. J. Thomson's experiments provided evidence for the existence of electrons as subatomic particles within the atom. This led to the plum pudding model of the atom, where electrons were embedded in a positively charged "pudding." These experiments laid the foundation for our understanding of atomic structure.
What evidence convinced J.J Thomson that an atom consist of more than electrons?
The evidence for JJ Thomson was that the plum pudding model could not predict why atoms absorbed and emitted spectral lines.
In his proposed model of the atom J.J. Thomson imagined the atom contained .?
Thomson is responsible for discovering that an atom contains electrons.
What evedence convinced JJ Thomson that an atom consists of more than electrons?
The evidence for JJ Thomson was that the plum pudding model could not predict why atoms absorbed and emitted spectral lines.
How do scientists know about the structure of an atom?
Scientists know about the structure of an atom through experimentation, such as using techniques like X-ray crystallography and spectroscopy to study the behavior of atoms. Theories like quantum mechanics also provide a framework for understanding the atom's structure based on experimental evidence.
Why do you think Thomson hypothesized that electrons must come from inside an atom?
Thomson had two pieces of evidence: 1- No matter what metal he used for the disk, the particles produced were indentical. 2- The particles had about 1/2000 the mass of a hydrogen, the lightest atom. These experiments provided the first evidence that atoms are made of even smaller particles.
. J. J. Thomson and experiments provided evidence that an atom .?
a cathode ray
What did Joseph John Thomson conclude about the atom?
J.J. Thomson discovered the electron and proposed the plum-pudding model for the atom.
Which model of the atom illustrated that an atom was a cloud of an positive charge with electrons randomly embedded within it?
The plum pudding model by JJ Thomson.
What feature of the nuclear model led to other scientific studies on the structure of the atom?
Thomson's watermelon model was further enhanced by Rutherford with his Gold foil experiment. This is also known as atomic model and led to the scientific study of atom's structure.
