Explain why the quantum number set (2, 1, -2, -½) is not possible for an electron in an atom.

Question

thomaster · Answer

Because in that set, the magnetic quantum number (the third one) is not possible
The magnetic quantum number (mℓ) ranges from -ℓ to +ℓ (ℓ=azimuthal quantum number, the second one)

Because ℓ = 1, Mℓ can only be -1, 0 or +1. So -2 isn't possible.

anonymous · Answer

For ℓ =2 Only this set is possible, (-2 , -1 , 0 , +1 , + 2)

thomaster · Answer

@khiz that's not a set, that's the range of the magnetic quantum number for ℓ =2

goformit100 · Answer

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anonymous · Answer

hmm.. wtev...