Question

Which answer choice best explains why atoms of carbon-14 (C-14) are unstable?

a. Atoms of C-14 have too many negatively charged electrons and too few positively charged protons.
b. Atoms of C-14 have too many positively charged protons and too few negatively charged electrons.
c. The attractive force that the protons in the nuclei of C-14 atoms generate is not strong enough to overcome the repulsive force that the neutrons generate.
d. The attractive force that the neutrons in the nuclei of C-14 atoms generate is not strong enough to overcome the repulsive force that the protons generate.