Which of the following best describes the force that holds the nucleus and electrons of an atom together. A The electric force that exists between oppositely-charged particles is what holds the atom together because the negatively-charged electrons are attracted to the positively-charged nucleus.
B The electric force that exists between similarly-charged particles is what holds the atom together because the negatively-charged electrons are attracted to the negatively-charged nucleus.
C The gravitational force that exists between all particles (or objects) on Earth is what holds the atom together because the mass of the protons attracts the mass of the electrons.
D The gravitational force that exists between all particles (or objects) on Earth is what holds the atom together because the charge of the protons attracts the charge of the electrons.