Where did Series Research Into Hydrogen Atoms appear in the Game?

It appeared on Medieval Times Group 229 Puzzle 1

Series Research Into Hydrogen Atoms

July 26, 2025June 5, 2025 by Koli Jam

CodyCross Series Research Into Hydrogen Atoms Solution

This question is part of CodyCross Medieval Times > Group 229 > Puzzle 1.
Answers of Series Research Into Hydrogen Atoms might change from time to time on each game update.

Series Research Into Hydrogen Atoms

Balmer

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