Chapter 7: Problem 71
. Given the following electronegativities $$ \begin{array}{lll} \mathrm{C} & =2.5 & \mathrm{~N}=3.0 & \mathrm{~S}=2.6 \end{array} $$ what is the central atom in CNS-?
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Predict the geometry of the following species: (a) \(\mathrm{SO}_{2}\) (b) \(\mathrm{BeF}_{2}\) (c) \(\mathrm{SeCl}_{4}\) (d) \(\mathrm{PCl}_{5}\)
Explain the meaning of the following terms. (a) expanded octet (b) resonance (c) unshared electron pair (d) odd-electron species
It is possible to write a simple Lewis structure for the \(\mathrm{SO}_{4}^{2-}\) ion, involving only single bonds, which follows the octet rule. However, Linus Pauling and others have suggested an alternative structure, involving double bonds, in which the sulfur atom is surrounded by six electron pairs. (a) Draw the two Lewis structures. (b) What geometries are predicted for the two structures? (c) What is the hybridization of sulfur in each case? (d) What are the formal charges of the atoms in the two structures?
Give the hybridization of each atom (except \(\mathrm{H}\) ) in the solvent dimethylsulfoxide. (Unshared electron pairs are not shown.)
Peroxypropionyl nitrate (PPN) is an eye irritant found in smog. Its skeleton
structure is
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