Keith,
Orbital names such as 1s, 2s, 2p, etc. do not require Nemeth Code. In addition, we do not retain italics for the letters in orbital names. As you say, wherever a superscript is included, Nemeth Code is certainly required (with italics still ignored).
–Kyle
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This reply was modified 5 years, 7 months ago by kdejute. Reason: answer confirmed; language changed to reflect that