Which electron configuration represents an atom in an excited state? a) 2-2 b) 2-8 c) 2-8-1 d) 2-2-1

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Which of the following is most likely true about water in chemical solutions?

The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.