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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for It's under helium in the periodic table:

NEON: Helium's periodic table neighbor
NEON: Element below helium in the periodic table
NEON: It's below helium in the periodic table
NEON: It's under helium in the periodic table
TWO: Helium, on the periodic table
NEON: Element below helium on the periodic table
NEON: It's below helium on the periodic table
NEON: Element between helium and argon on the periodic table