N2O, or nitrous oxide, has many Lewis dot structures since both nitrogen and oxygen can act as the center atom. In total, there are three valid Lewis dot structures for nitrous oxide.
The first Lewis dot structure contains nitrogen as the central atom with a double bond to oxygen and a double bond to nitrogen to its right. The double-bonded oxygen and nitrogen both have four single electrons. The second structure has nitrogen in the center that is triple-bonded to one nitrogen atom and single-bonded to an oxygen atom. The tripled-bonded nitrogen has two electrons drawn in, and the oxygen has six electrons surrounding it. The last structure also has nitrogen as the central atom and is singly bonded to a nitrogen atom with six electrons on one side, and it is triple-bonded to an oxygen atom with two electrons on the other side.