🤓 Based on our data, we think this question is relevant for Professor Selampinar's class at UCONN.
Draw the lewis structures (resonance) of NH 2-
N will appear as our central atom while Hs is single bonded on it
N has 5 valence electrons while H has 1 valence electron. There's an extra electron according to the total charge. Total valence electron will appear as 8 (5 + 2(1) + 1 = 8)