Aradioactive isotope of carbon has the mass number 14. how many neutrons does this isotope have

Atomic number Carbon = 6

14 mass - 6 protons = 8 neutrons

mass (protons+neutrons) - atomic number (protons #) = neutrons #

D. most models represent a real world object in a simpler way

Mg-26 and mg-24 are pair of isotopes. isotopes are defined as atoms of the same element having same atomic number but different mass number. i hope that was .