[{"Bold_text": "noun", "List Items": ["Physics.the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical attraction; the number of protons determines the identity of the element.an atom with one of the electrons replaced by some other particle:muonic atom;kaonic atom.", "the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical attraction; the number of protons determines the identity of the element.", "an atom with one of the electrons replaced by some other particle:muonic atom;kaonic atom.", "Energy.this component as the source of nuclear energy.", "a hypothetical particle of matter so minute as to admit of no division.", "anything extremely small; a minute quantity.Synonyms: whit , jot , iota , scintilla , speck , shred"]}]