the large horizontal metal plate are separated by 4mm .the lower plate is at a potential pg -6v what potential should be applied to the upper plate to create an electric field of strength of 4000 Vm-1 upward in space between plate

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.