Example: O and N
Home Up Example: H and C Example: H and N Example: H and O Example: H and Cl Practice with Formulas Practice with Names Example: O and C Example: O and N Example: O and Cl Practice with Formulas and Names

 

Example - Oxygen and Nitrogen

Oxygen needs two electrons. Nitrogen needs three electrons. By using the ratio, we can figure that we must have two nitrogen atoms and three oxygen atoms in order to have each element share the same number of electrons. Again the number of atoms of each element is just opposite the number of electrons needed by each element. Thus the formula for this compound is N2O3. The name for this compound is dinitrogen trioxide. We won't try to figure out an electron dot diagram for this one because it does not have just one central atom that is bonded to all the other atoms. But if you want to try it, go ahead and then talk to the instructor about your creation.
·
:  N  ·
·
has 5
needs 3
  N O
need ratio 3 2
atom ratio 2 3
formula N2O3
name dinitrogen trioxide
··
·  O  ·
··
has 6
needs 2

 

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E-mail instructor: Eden Francis

Clackamas Community College
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