We’re being asked to which of the following represents an impossible combination of the quantum numbers n and l
Let’s first define and determine the possible values of the first 2 quantum numbers:
• principal quantum number (n) → energy level in orbitals and its value could be any positive integer starting from 1 to infinity
• angular momentum quantum number (ℓ) → (l) has to be at least 1 less than n, range of values from 0 up to (n-1)
▪ Each ℓ value corresponds to a subshell:
ℓ = 0 → s subshell
ℓ = 1 → p subshell
ℓ = 2 → d subshell
ℓ = 3 → f subshell
Which of the following represents an impossible combination of the quantum numbers n and l?
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