How many moles of nitrogen adams are in a mole of al(no3)3

What is the maximum number of electrons that an atomic orbital can contain?

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?