Which instrument is directly used to determine the relative masses of atoms?
(a) spectroscope
(b)geiger counter
(c)mass spectrograph
(d)microbalance
(e)electron microscope

What happens when light is scattered?

Acontrol during an experiment. might change remains constant does not exist does change

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.