NH3 Lewis Structure - How to Draw the Dot Structure for NH3 - WebTv

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A step-by-step explanation of how to write the Lewis Dot Structure for NH3 (Ammonia or Nitrogen Trihydride). The Lewis structure for NH3 is one of the most common Lewis structures to show up on general chemistry tests. For the NH3 Lewis structure, calculate the total number of valence electrons for the NH3 molecule (NH3 has 8 valence electrons). After determining how many valence electrons there are in NH3, place them around the central atom to complete the octets. Be sure to use the number of available valence electrons you found earlier.Note: Hydrogen (H) atoms always go on the outside of a Lewis structure.Get more chemistry help at