How many electron groups on the nitrogen atom based on the following Lewis dot structure. So here we have a picture of ammonia. Ammonia has one lone pair and three surrounding elements. Remember your electron groups equal the number of lone pairs on the central element as well as the number of bonding groups which are just the number of surrounding elements.
So if we take a look here we're going to say we have 1234 electron groups on the nitrogen atom. Also realize here when we talk about a lone pair, it's just a pair of electrons not forming a bond. And remember they exhibit an electron cloud. So we see this electron cloud as this low pier.
This just helps push bonds further away from itself, causing even more repulsion within our molecule. So again in this particular question, we have 1 lone pair and three bonding groups on the nitrogen atom, giving us a total of 4 electron groups.