Problem: Hydrazine (NH2 NH2 ), hydrogen peroxide (HOOH), and water (H2 O) all have exceptionally high surface tensions in comparison with other substances of comparable molecular weights.Draw the Lewis structure for hydrazine (NH2 NH2).

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We’re being asked to draw the Lewis structure for hydrazine (NH2NH2). We first need to determine the total number of valence electrons present in the molecule:


            Group                        Valence Electrons

N         5A                   2 × 5 e10 e

H         1A                   4 × 1 e4 e

              Total:  14 valence e

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Problem Details

Hydrazine (NH2 NH2 ), hydrogen peroxide (HOOH), and water (H2 O) all have exceptionally high surface tensions in comparison with other substances of comparable molecular weights.

Draw the Lewis structure for hydrazine (NH2 NH2).

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Lewis Dot Structure concept. You can view video lessons to learn Lewis Dot Structure. Or if you need more Lewis Dot Structure practice, you can also practice Lewis Dot Structure practice problems.