Electron cannot exist in the nucleus it is confirmed by observing that______________?
Correct answer: D. The velocity of electron must be very high according to uncertainty principle
- A. It does emit radiation
- B. Its size as compare to proton and neutron is very small
- C. No antiparticle of electron is present
- D. The velocity of electron must be very high according to uncertainty principle
Explanation
If an electron were confined inside a nucleus of extremely small size, the uncertainty principle would require a very large uncertainty in its momentum, implying an unrealistically high velocity. The likely mistake is choosing its small size, because electron size alone does not prove that it cannot be present in the nucleus.
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About Quantum Theory and Radiation
Quantum theory treats electromagnetic radiation as packets of energy called photons, with energy proportional to frequency through E equals hf. The topic covers Planck's hypothesis, photon momentum, the photoelectric effect, threshold frequency, work function and wave particle duality, distinguishing quantised energy exchange from classical continuous radiation.
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