Physics
NULL
Medium
Question
Electrons_________________?
A
Can exist inside the nucleus
B
Cannot exist inside the nucleus
✓ Official correct answer
C
Can exist both inside and outside the nucleus
D
Do not know
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
Can exist inside the nucleus
No member explanations yet for this option.
B
Cannot exist inside the nucleus
No member explanations yet for this option.
C
Can exist both inside and outside the nucleus
No member explanations yet for this option.
D
Do not know
No member explanations yet for this option.
Explanation
Quantum mechanical arguments (the uncertainty principle) show that electrons cannot exist inside the nucleus — if confined there, their kinetic energy would far exceed what is observed in beta decay.
So the correct answer is Cannot exist inside the nucleus.
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