Question 4.4: Drawing an Electron-Dot Structure for N2H4 Draw an electron-......

General Chemistry: Atoms First [1015060]

Drawing an Electron-Dot Structure for $N_2H_4$

Draw an electron-dot structure for hydrazine, $N_2H_4$ .

STRATEGY

Nitrogen, a group 5A element, has five valence electrons and forms three bonds, as shown in Table 4.4. Join the two nitrogen atoms, and add two hydrogen atoms to each.

TABLE 4.4 Covalent Bonding Trends for Second-Row Elements in Neutral Molecules
Group	Number of Valence Electrons		Number of Bonds Example
3A	3	3	$BH_3$
4A	4	4	$CH_4$
5A	5	3	$NH_3$
6A	6	2	$H_2O$
7A	7	1	HF
8A	8	0	Ne

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