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प्रश्न
Explain in brief the experimental proof which led to the discovery of –
Protons
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उत्तर
Protons: Since atoms are electrically neutral there must be equal positively charged particles in the atom. This led to the discovery of the protons.
Goldstein discovered protons. He used a perforated disc as a cathode and found positively charged rays travelling in the opposite direction to cathode rays.
These were protons i.e. positively charged particles, 1837 times heavier than an electron.
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संबंधित प्रश्न
All the gases from cathode rays anode rays when electricity is passed through them :
What does the formation of anode rays tell us about the atoms?
Name the gas which produces anode rays consisting of protons in the discharge tube experiment.
What is the nature of the charge on Anode rays?
Which sub-atomic particle was discovered by Goldstein.
Explain the following:
Mass of an atom is concentrated inside the nucleus of the atom.
Define: Proton
Represent an electron ‘e’ in term of its symbol showing the subscript and superscript value.
Name or state the following.
Two elements having the same number of protons and electrons but a different number of neutrons.
Write the properties of anode rays.
Assertion: Proton can be defined as a hydrogen ion (H+).
Reason: These photons are produced when one electron is removed from one hydrogen atom.
