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Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

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 diagram shows the correct way to represent an ionic compound of magnesium oxide?