. Write the Lewis structure of the nitrite ion,


NO-2

 

Best Answer

Answer: Step 1. Count the total number of valence electrons  of the nitrogen atom, the oxygen atoms and the additional one negative charge (equal to one electron).

N (2 s2 2p3). O (2s2 2p4)

5 + (2 × 6) + 1 = 18 electrons

Step 2. The skeletal structure of   is written as : O N O

Step 3. Draw a single bond (one shared electron pair) between the nitrogen and each of the oxygen atoms completing the octets on oxygen atoms. This however, does not complete the octet on nitrogen if the remaining two electrons constitute lone pair on it.

was

Hence we have to resort to multiple bonding between nitrogen and one of the oxygen atoms (in this case a double bond). This leads to the following Lewis dot structure              

was

 

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