Answer:
negative charge,
because atom is made of electrons,protons, and neutrons. Electron is negatively charge, proton is positively charged and neutron is neutral so when the number of protons and electrons are equal it makes the atom neutral in charge, BUT IF
THE ELECTRON IS ADDED IN THE ATOM IT BECOMES NEGATIVELY CHARGED
THE ELECTRON IS REMOVED FROM THE ATOM THEN IT BECOMES POSITIVELY CHARGED