How Does Electron Energy Affect Atomic and Nuclear Dimensions?

AI Thread Summary
Changing the energy of electrons in electron diffraction affects their de Broglie wavelength, allowing for the investigation of atomic arrangements and nuclear dimensions. Higher energy electrons have shorter wavelengths, enabling the resolution of smaller structures, such as nuclei. This technique is crucial for understanding atomic interactions and nuclear properties. The discussion emphasizes the relationship between electron energy and the ability to probe different scales of matter. Understanding these principles is essential for advancements in materials science and nuclear physics.
liaminho
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I need help with these two questions:

1. Electron diffraction can be used to investigate both the arrangement of atoms and the dimensions of nuclei. Explain how changing the energy of the electrons can be used to achieve this.

And...

2. Uranium has atomic number 92. Two of its common isotopes have nucleon numbers 235 and 238. How many neutrons are there in a nucleus of each of these isotopes?
 
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Actually, ignore question 2. I can do that one :)
 
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