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The Lewis structure of NH3 (left) and H2O (right). NH3 and H2O have several similarities including dipole moment (1.47 D for NH3 and 1.85 for H2O), tetrahedral electronic structure, bond angle (106.7° for NH3 and 104.5° for H2O), and bond length (101.7 pm for NH3 and 95.8 pm for H2O).
