Write down the Lewis structure of each of the following: [2] i) H 3O^+ [1] ii) N 2O [1]

i) $H X_{3} O X^{+}$

The Lewis structure of the hydronium ion is shown below. The central oxygen atom forms single bonds with three hydrogen atoms and possesses one lone pair. The overall charge is +1.

H₃O⁺ (Hydronium ion)H₃O⁺ (Hydronium ion)

Central O with 3 H atoms (single bonds) and 1 lone pair; overall +1 charge.

ii) $N X_{2} O$

The Lewis structure of nitrous oxide is linear. The central nitrogen atom is double-bonded to one terminal nitrogen and single-bonded to the oxygen atom. The terminal nitrogen has one lone pair, the central nitrogen has no lone pairs, and the oxygen atom has three lone pairs.

N₂O (Nitrous oxide)N₂O (Nitrous oxide)

Linear structure: N≡N=O with lone pairs on terminal N (1) and O (3).

i) $H X_{3} O X^{+}$

ii) $N X_{2} O$

Discussion

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Write down the Lewis structure of each of the following: [2] i) H 3O^+ [1] ii) N 2O [1]

i) HX3​OX+

ii) NX2​O

Discussion

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i) $H X_{3} O X^{+}$

ii) $N X_{2} O$