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 element of nucleon number P and atomic number Q…Allotropes of an element differ in their?If the relative molecular mass of an element is not…If the relative molecular mass of an element is not…The mass of an element is 27 and its atomic number…