Atomic particle (3)
'atomic particle' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for neutron that I've seen before include "one's not charged" , "Chargeless particle" , "Subatomic particle with no electric charge" , "one isn't charged" , "Charged particle" .)
'atomic particle' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ion that I've seen before include "Electrically charged atom or group of atoms" , "Eletrically charged particle" , "Particle (phys.)" , "Subatomic particle" , "Charged atom/molecule" .)