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It was J. J. Thomson (Joseph John Thomson)
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Neutron was discovered by?
The neutron was discovered by Sir James Chadwick in 1932. Chadwick conducted experiments that provided evidence for the existence of a neutral subatomic particle within the atomic nucleus, which he named the neutron.
What was the experimental evidence that Thomson had discovered the existence of a subatomic particle when working with cathode rays?
Thomson discovered the electron and proved that it existed without ever being able to see or isolate one. Electrons were the first subatomic particles to be discovered, the first particle of matter identified that was smaller than an atom. This discovery also finally provided some physical proof of, and description of, the basic unit that carried electricity. Thomson attached thin metal plates inside his cathode ray tube to a battery and showed that an electrical field could also deflect cathode rays.
Who is accredited in the history of modern chemistry that neutron exists?
James Chadwick, a British physicist, is credited with the discovery of the neutron in 1932. By conducting experiments with beryllium and alpha particles, he provided evidence for the existence of this neutral subatomic particle. This discovery was a crucial advancement in the field of modern chemistry and contributed to our understanding of atomic structure.
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 supports that light is a particle?
The photoelectric effect, where light shining on certain metals causes the emission of electrons, provided strong evidence that light behaves as a particle. This effect was explained by Albert Einstein in 1905, proposing that light consists of discrete packets of energy called photons. Subsequent experiments, such as the Compton effect, further supported the particle-like behavior of light.
What particles did jj Thomson discover?
J.J. Thomson discovered the electron in 1897 while conducting experiments with cathode rays. This discovery was groundbreaking as it provided evidence for the existence of subatomic particles.
What was the evidence against atoms being indivisible?
The discovery of subatomic particles like electrons, protons, and neutrons provided evidence that atoms were not indivisible. Additionally, experiments such as Thomson's cathode ray tube and Rutherford's gold foil experiment demonstrated that atoms have a dense nucleus and a surrounding cloud of electrons, contradicting the idea of indivisibility.
. J. J. Thomson and experiments provided evidence that an atom .?
a cathode ray
How do you find what evidence the DA has?
Defense counsel must be provided with evidence. If you are a spectator you must attend the trial and see for yourself what evidence is produced at trial.Defense counsel must be provided with evidence. If you are a spectator you must attend the trial and see for yourself what evidence is produced at trial.Defense counsel must be provided with evidence. If you are a spectator you must attend the trial and see for yourself what evidence is produced at trial.Defense counsel must be provided with evidence. If you are a spectator you must attend the trial and see for yourself what evidence is produced at trial.
Which is larger antineutrino alpha particle beta particle or gamma radiation?
Gamma radiation is the most energetic and penetrating of the options provided, followed by the alpha particle, beta particle, and antineutrino, in descending order.
What were arthur compton's contributions to the atomic theory?
Arthur Compton made significant contributions to the atomic theory by discovering the Compton effect, which provided experimental evidence for the particle nature of light. This discovery helped establish the understanding that light can behave as both a wave and a particle, which was fundamental to the development of quantum mechanics.
What did Thomsons experiments prove?
Thomson's experiments with cathode rays proved the existence of negatively charged particles, which he called electrons. This discovery provided evidence for the existence of subatomic particles and laid the foundation for the development of the modern atomic theory.
