Question 8.2: Predict the geometry of an ammonium ion, NH4^+....

General Chemistry [1096620]

Predict the geometry of an ammonium ion, $NH_{4}^{+}$ .

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The Lewis formula for an $NH_{4}^{+}$ ion is

\begin{bmatrix} \underset{|}{H} \\ H – N – H \\ \overset{|}{H}\end{bmatrix} ^{\oplus }

Because the valence shell of the nitrogen atom in $NH_{4}^{+}$ contains a total of four electron pairs (four covalent bonds), we predict that an ammonium ion is tetrahedral, which is the observed structure of an $NH_{4}^{+}$ ion.

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