We’re being asked to draw the Lewis structure for CH(NH2)2+. We first need to determine the total number of valence electrons present in the molecule:
Group Valence Electrons
C 4A 1 × 4 e– = 4 e–
H 1A 5 × 1 e– = 5 e–
N 6A 2 × 5 e– = 10 e–
+1 charge –1 e–
Total: 18 valence e–
Draw the lewis structure for CH(NH2)2+.
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