Hard What distinguishes atomic number from mass number? AAtomic number counts neutrons; mass number counts electrons BAtomic number counts protons; mass number counts protons plus neutrons CBoth always count the same particles DMass number counts energy bands EAtomic number counts protons plus neutrons; mass number counts protons only Report a problem with this question What is wrong? The marked correct answer is wrongAn option is wrong or repeatedSpelling or wording mistakeSomething else Details (optional) Send report