What is the difference between two atoms of carbon having the same number of neutrons? a. nothing b. the number of protons c. the number of electrons d. there may be differences in how they react with oxygen 2. (10 pt) what is the difference between an atom of silver and an atom of gold? a. one is new and the other is old. b. their net electrical charges are different. c. their atomic masses are different. d. more people would rather have one gold atom than a lot of gold?