Crossword clue

“Heaviest naturally occurring noble gas”

This clue appeared as 37-Down in the USA Today Crossword on Monday, September 28, 2026. The answer has 5 letters.

Answer · 5 lettersFirst appearance
RADON
Letters5
Starts withR
Ends withN
Vowels2

Where this clue has appeared

USA Today Crossword
Sep 28, 20265 letters→

About this clue

The clue “Heaviest naturally occurring noble gas” ran in the USA Today Crossword on September 28, 2026 as 37-Down. Its answer is a 5-letter word that starts with R and ends with N.

See every answer from the puzzle on the USA Today Crossword page for September 28, 2026, or learn how clues like this work in our guide to crossword clue types.

More clues from this puzzle

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FAQ

What is the answer to the “Heaviest naturally occurring noble gas” clue?+

The answer is RADON (5 letters), from the USA Today Crossword of September 28, 2026.

Where has this clue appeared?+

We have seen it 1 time in the USA Today Crossword.

How do I find other USA Today Crossword answers?+

Open the full list of answers for September 28, 2026, or browse every date on the USA Today Crossword hub.