Electrons can revolve only in those orbits having _-angular momentum which depends on its _ number.
Correct answer: C. fixed, quantum
- A. variable, quantum
- B. fixed, principal
- C. fixed, quantum
- D. variable, principal
Explanation
The electron can revolve only in those orbits having fixed angular momentum which depends on its quantum number. We define orbitals as states with definite angular momentum (and also definite energy). An electron in a hydrogen atom could exist in a state with indefinite angular momentum, but we would say that it was in a superposition between two or more orbitals. However, even if the electron is in a state with indefinite orbital angular momentum, if we could somehow measure a component of the angular momentum, it would always be an integer multiple of ℏ.
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About Atomic Structure
Atomic structure covers the discovery of the proton, Planck's quantum theory, hydrogen emission spectra and the evidence for quantized energy levels. You will use quantum numbers to describe orbitals, distinguish s, p, d and f orbital shapes, and write electronic configurations, including the correct order of electron filling.
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