One may be bonded (3)

I believe the answer is:

ion

(Other definitions for ion that I've seen before include "Charged atom/molecule" , "Electrically-charged particle" , "Particle (phys.)" , "Subatomic particle" , "Eletrically charged particle" .)

I've seen this clue in The Wall Street Journal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.