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Who discovered proton?
Who discovered the nucleus of an atom?
Who discovered the neutron?
Who discovered the proton in ionized gas?
The nucleus of the atom was discovered by Ernest Rutherford in the year 1911 in his famous gold foil experiment. He concluded that all the positively charged particles in an atom were concentrated in a singular core and that most of the atom’s volume was empty.
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Rutherford did detect the ejected proton in 1919 and interpreted it as evidence for disintegration of the nitrogen nucleus (to lighter nuclei). In 1925, Blackett showed that the actual product is oxygen and identified the true reaction as 14 N + α → 17 O + p.
Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.
- How can we calculate e/m value of elactron?The angle of deflection in the thomson experiment depends on the e/m value. This is because F = ma So a = F/m F is proportional to e So a is propor...
- comparing thomsons exp. and rutherford's exp. why does the rays deflect in rutherford's model due to...@Afeefdk Because they very different experiments...Look at both the experiments. In the Thomson's experiment, J.J Thompson didn't strike the cathod...
- In th Rutherford experiment, why did he use alpha particles ( He2+) ? wouldn't it have been better i...Rutherford was interested in radio-chemistry (radioactivity) and what it might reveal about the atom. is focus was on alpha particles (from alpha r...
- How Rutherford told that atom is like a solar system?on which base ?Because he used classical physics (although he quantized the angular momentum) to conceive his model....and classical physics is based on intuitive...
- why did we have to name positive ions cations and not anions, since most of the naming in science se...The negatively charged electrode is the anode, this is where the electrons in a current originate. The positively charged electrode is the cathode...
- How did Rutherford make the alpha particles of helium and how did he concentrate those particles so ...He put the radium in a container with only one 'hole' for the alpha particles to get out. Any alpha particles going in other directions simply don'...
- is anode rays consist of proton ?You are right, both kinds of rays are emitted simultaneously. the cathode rays consist of electrons, while the anode/canal rays are the positively...
- Discovery of alpha and beta radiation. Starting in 1898 Rutherford studied the radiation emitted by uranium. He discovered two different types of radiation, which he named alpha and beta.
- The age of planet Earth and radiometric dating. Rutherford realized that Earth’s helium supply is largely produced by the decay of radioactive elements.
- Discovery of the atomic nucleus. After his move to the University of Manchester, Rutherford and two of his researchers – Hans Geiger and Ernest Marsden – carried out in 1909 one of the landmark experiments in science – the gold foil experiment.
- Discovery of nuclear reactions. Rutherford achieved the first deliberate transformation of one element into another. In 1919 he converted nitrogen atoms into oxygen atoms by bombarding nitrogen with alpha particles.
Through the 1920s Rutherford, his personal assistant George Crowe, and Chadwick used α particles to probe and prod the nucleus: to determine its size, to measure the energy of emitted protons, and they investigated the “barrier of very high potential which retained the nucleus intact, while checking the ingress of a foreigner” (Eve, pp ...
Nuclear fission was discovered by German chemists Otto Hahn and Fritz Strassmann in 1938 during the course of experiments initiated and explained by Austrian physicist Lise Meitner.
It was James Chadwick, a British physicist and co-worker of Rutherford, who discovered the third subatomic particle, the neutron. Chadwick bombarded beryllium foil with alpha particles and noticed a neutral radiation coming out.
