Enter a clue or pattern or both:
The Clue
#1 on a table (8 letter answer)
The Answer
HYDROGEN
Tags
Notes
The answer HYDROGEN is so rare that it appears less than once every 2500 puzzles.
Related Clues
Lightest known substance
Definition
HYDROGEN as a noun:
1. (hydrogen, H, atomic number 1) = a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe