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Question
Which of the following spectroscopic notations are not allowed? (a) $5s^1$ (b) $1d^1$ (c) $4s^3$ (d) $3p^7$ (e) $5g^{15}$. State which rule is violated for each that is not allowed.
1. allowed
2. $l=2$ exceeds the maximum allowed for $n=1$
3. A maximum of two electrons may occupy the "s" sub-shell. Having three electrons would violate the Pauli exclusion principle.
4. A maximum of 6 electrons is allowed in the "p" sub-shell.
5. allowed
Solution Video