HELP PLEASE: describe the periodic trends of an atomic radius electronegativity ionization energy and ionic radius what they are analyzing in which direction to increase on the table explain how each of them are related to one another

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?

How many moles of al3+ ions are in 1.25 moles of al2o3

Which formula can be used to calculate the molar mass of hydrogen peroxide