Question

Regardless of the energy of the electrons used to produce ions, J.J. Thomson never could remove more than one electron from a hydrogen atom. What could he have concluded about the positive charge of a hydrogen atom?

   Regardless of the energy of the electrons used to produce ions, J.J. Thomson never could remove more than one electron from a hydrogen atom. What could he have concluded about the positive charge of a hydrogen atom?

Physics Principle and Problems

Physics Principle and Problems

Paul W. Zitzewitz,… 1st Edition

Chapter 26, Problem 14

Instant Answer

Solved by Expert Mayukh Banik

06/01/2020

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J. Thomson's experiments involved removing electrons from a hydrogen atom. However, he found that no matter how much energy he used, he could never remove more than one electron from a hydrogen atom. This can be represented as: \[ H \rightarrow H^{+} + e^{-} \] Show more…

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Regardless of the energy of the electrons used to produce ions, J.J. Thomson never could remove more than one electron from a hydrogen atom. What could he have concluded about the positive charge of a hydrogen atom?

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Key Concepts

Ionization and Electrostatic Attraction

Ionization refers to the process of removing electrons from an atom, while electrostatic attraction is the force holding the electrons to the positive nucleus. The fact that only one electron could be detached from hydrogen regardless of the energy used indicates a strong, singular binding force created by a concentrated positive charge, which directly supports models of atomic structure where electrons are bound to a central, positively charged region.

Atomic Structure

This concept deals with the internal arrangement of an atom, emphasizing that atoms are composed of distinct regions with specific roles. In the context of the hydrogen atom, the observed limitation in removing electrons indicates that it consists of a small, concentrated positive region that holds exactly one electron, providing early evidence of a non-diffuse positive charge rather than a uniformly distributed one.

Charge Quantization

Charge quantization is the idea that electrical charge comes in discrete, indivisible units. From Thomson’s experiments, the inability to remove more than one electron from hydrogen implies that the positive charge must be exactly equal in magnitude to the charge of a single electron, reinforcing the principle that atomic charges are quantized rather than continuous.

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