In a stable atom, the number of protons equals the number of___________

A. Nuclei
B. Electrons
C. Neutrons
D. Isotopes

3 answers

Most stable atoms are when there is no charge. On a periodic table this would be the least reactive group on the period table. So your answer is..?
Angel, take it one step further: The most stable atoms are when there is no charge. So, if protons are positively charged, which answer choice in equal number would cancel out the positively charged protons to give a net charge of zero?
Chemical stability, or nuclear isotope stability? Iron is more stable than Florine. Gold is quite stable. So the question here really ought to be reworked. Maybe my nuclear physics background is haunting me here. For nuclear stability, protons roughly equal neutrons in stable atoms.