The Lewis dot structure of N2H2 is drawn with a pair of double lines between two N's at the center, with a single line from each N connecting to an H. Each N has a pair of dots on a side that does not contain any lines.
In the Lewis dot structure, the Ns represent nitrogen atoms and the Hs represent atoms of hydrogen. Each dot represents a valence electron, and each line stands for a pair of bonded electrons. The single lines are called single bonds, and the double lines are called double bonds. N2H2 has a total of 12 valence electrons.