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In his Nobel Prize address, Ernst Rutherford announced that he had experimental evidence that the alpha particle was really an electron. was an ionized hydrogen atom. was ionized helium atom. was an isotope of lithium.

In his Nobel Prize address, Ernst Rutherford announced that he had experimental evidence that the alpha particle was really an electron. was an ionized hydrogen atom. was ionized helium atom. was an isotope of lithium.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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**Question 12** In his Nobel Prize address, Ernst Rutherford announced that he had experimental evidence that the alpha particle: - ○ was really an electron. - ○ was an ionized hydrogen atom. - ○ was ionized helium atom. - ○ was an isotope of lithium.
Transcribed Image Text:**Question 12** In his Nobel Prize address, Ernst Rutherford announced that he had experimental evidence that the alpha particle: - ○ was really an electron. - ○ was an ionized hydrogen atom. - ○ was ionized helium atom. - ○ was an isotope of lithium.
Expert Solution
Explanation :
  • An alpha particle is a radioactive particle that has an atomic number of 2 and a mass number of 4.
  • These chemical properties are consistent with that of Helium (2He4).
  • Thus, an alpha particle is an ionized Helium atom.
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