Asked in UHS MDCAT 2009 2009Moderate

In atomic particles:

Correct answer: D. Charge of proton is almost equal to charge of electron

  • A. Mass of neutron is almost equal to mass of electron
  • B. e/m of a proton is almost equal to e/m of electron
  • C. Mass of proton is almost equal to mass of electron
  • D. Charge of proton is almost equal to charge of electron

Explanation

Explanation:Both protons and electrons have the same charge in the atomic particles. Hence, the correct answer is D. This option is not correct. The mass of protons and neutrons is 1836 times greater than electrons. This option is also incorrect. As the electron and proton have different masses, the e/m value becomes different.

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About Discovery of the Proton

The discovery of the proton follows the study of positive rays, also called canal rays, observed in discharge tubes and later identified as positively charged particles. The work of Goldstein and Rutherford is linked to the proton's charge, relative mass and role in the nuclear model, distinct from the discovery of the electron.

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