Enter a clue or pattern or both:
The Clue
Five atoms in a ulexite molecule (6 letter answer)
The Answer
BORONS
Tags
Notes
The answer BORONS is so rare that it appears less than once every 2500 puzzles.
Definition
BORON as a noun:
1. (boron, B, atomic number 5) = a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder