1)what subatomic particle determines what element the atom is? protons neutrons electrons nucleus 2)rutherford's model of the atom is best described as a) a dense, positively charged nucleus with electrons moving around the nucleus. b)a dense nucleus of electrons with very little empty space. c)a dense, positively charged nucleus with electrons on its surface. d)had a nucleus of electrons, about which positively charged particles would orbit. 3) an atom of oxygen with 8 protons, 8 neutrons, and 8 electrons would have a mass number of a)4 b)16 c)24 4)the current model of the atom suggests that a)an electron cloud surrounds the nucleus. b)a proton cloud surrouds the nucleus. c)electrons travel in a definite path around the nucleus. d)the exact path of a moving electron can be predicted.