Given nitrogen 1 oxide and oxygen how can one differenciate the two

Nitrogen has an atomic number of seven, while the atomic number of oxygen is eight. That means nitrogen has seven protons in the nucleus of each atom, as well as seven electrons surrounding the nucleus. Oxygen has eight protons and electrons. Atoms combine with one another to form molecules.

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when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.