Question

if an atom has nine protons and ten electrons, then the atom is positively charged. negatively charged. radioactive. neutral.

Explanation:

Protons carry a positive charge (+1) and electrons carry a negative charge (-1). The atom has 9 protons (+9 charge) and 10 electrons (-10 charge). Calculating the net - charge: +9+( - 10)= - 1. A negative net - charge means the atom is negatively charged.

Answer:

negatively charged.