(2) 2 - 7 - 18 - 7 does, because the electron from the L shell jumped to the N shell, which requires energy.
The rest of them are either different types of atoms (different elements) or are not the excited state (ground state)
I need more information but um Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water
Answer 1 and 2 are true for alkaline solutions.
Acids have a pH below 7. (this is the answer)
Both acids and bases are electrolytes as they have free moving ions.
Feel free to comment if you want further explanation.
The answer is <span>Potassium cyanide</span>
