Moderate

The relationship between quantum number n and l is:

Correct answer: C. l = n - 1

  • A. n = l - 1
  • B. l = n - 2
  • C. l = n - 1
  • D. n = l - 2

Explanation

The principal quantum number, n, describes the energy of an electron and the most probable distance of the electron from the nucleus. In other words, it refers to the size of the orbital and the energy level the electron placed in it. The number of subshells describes the shape of the orbital. The relationship b/w n and l is l=n-1, i.e, if n=1 then l=0.

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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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