Which statement about the noble gases is most reliable?
the chemistry of the reactions of noble gases is not very interesting.
the noble gases are some of the most beautiful elements.
the noble gases are in the rightmost column of the periodic table.
the history of the discovery of noble gases is dull.

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.

Nan element’s square on the periodic table, the number with the greatest numerical value represents the

What is the chemical formula for a compound between li and br? libr li2br libr2 libr3