Answer:
The correct answer is option C.
Explanation:
Atom has three subatomic particles;
Electron : Negatively charged species found inside an atom and outside of the nucleus.
Proton: Positively charged species found inside the nucleus of an atom.
Electron : Neutral charge species found inside the nucleus of an atom
Generally an atom is an electrically neutral species with equal number of electrons and protons.
According to question,The correct labeling of the U is an electron.
