The most concentrated solution is b
The answer is "opposite charges."
Well a compound is 2 or more different molecules together. So if you see a periodic table you will see the elements to see if they are the same or not.
Explanation:
What is true about an atom in an excited state? Select all that apply:
A. It is less likely to enter chemical reactions.
B. It is more likely to enter chemical reactions.
C. It has less energy than a ground state atom.
D. It has more energy than a ground state atom.
