An element and its isotope only differ in the number of? by Sunday | Nov 3 | Physics JAMB | 0 comments A. protons B. electrons C. ions D. neutrons Correct Answer: Option D – neutrons Users Also Read These:An isotope has an atomic number of 15 and a mass…An isotope has an atomic number of 15 and a mass…The nucleon number and the proton number of a…Uranium of atom number 92 and mass number 238 emits…If the relative molecular mass of an element is not…