Multiple ChoiceWhich of the following answers give the correct number of subatomic particles for ?1161views14rank
Multiple ChoiceWhich of the following answers give the correct number of subatomic particles for ?1030views8rank
Open QuestionWhich of these refers to atoms with the same atomic number but different atomic masses?164views
Open QuestionThe atomic number of fluorine is 9 and its atomic mass is 19. How many neutrons does fluorine have?260views
Open QuestionOne isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?185views
Open QuestionHow many protons, neutrons, and electrons are there in a neutral atom of 131I (iodine-131)?179views
Open QuestionTwo isotopes of the same element will have the same number of _____ but a different number of ____.149views
Open QuestionHow many protons, neutrons, and electrons are there in a neutral atom of 30P (phosphorus-30)?160views
Open QuestionAn isotope of yttrium has 39 protons and 59 neutrons. What is the mass number of that isotope?198views
Open QuestionThe superscript preceding each hydrogen atomic symbol (H) represents which of the following?166views
Open QuestionCan two atoms with the same mass number ever be isotopes of each other? Explain.127views