Which of the following is NOT an electromagnetic wave?
Correct answer: D. Large energy gapped between electrons
- A. Complete valence band
- B. Partially filled conduction band
- C. Tightly bounded valence electrons
- D. Large energy gapped between electrons
Explanation
Electromagnetic waves are characterized by the oscillation of electric and magnetic fields propagating through space, such as visible light, radio waves, microwaves, and X-rays. Options A, B, and C do not describe the characteristics of electromagnetic waves, while Option D correctly identifies that electromagnetic waves do not have a large energy gap between electrons.
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