A. Position and momentum cannot be known simultaneously.
B. Electrons can only exist in certain orbits.
C. Energy levels are quantized.
D. All electrons have fixed positions.
Answer: Position and momentum cannot be known simultaneously.
What is the significance of the Heisenberg uncertainty principle?
Additional Information: The Heisenberg uncertainty principle states that it is impossible to simultaneously know both the position and momentum of an electron.
Subjects: Atomic Structure, Chemistry