Water is an example of a compound.
a. true
b. false

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

Element before carbon on the periodic table