Shape of the orbital occupied by an electron is defined by:
Correct answer: A. Azimuthal quantum number
- A. Azimuthal quantum number
- B. Principal quantum number
- C. Magnetic quantum number
- D. Spin quantum number
Explanation
This is the correct answer. The azimuthal quantum number, also known as the angular momentum quantum number, determines the shape of an atomic orbital. It is denoted by the letter l. The possible values of l depend on the principal quantum number (n). For a given n, l can have values from 0 to n-1. Each value of l corresponds to a different orbital shape: l = 0: s orbital (spherical) l = 1: p orbital (dumbbell-shaped) l = 2: d orbital (cloverleaf-shaped)l = 3: f orbital (more complex shapes)
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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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