The diagram defines α as the axial-to-equatorial F–Te–F angle and β as the angle between the two equatorial F atoms in an AX₄E seesaw model. γ and δ are Cl–Se–Cl and O–Se–Cl angles in pyramidal SeOCl₂

Question

The diagram defines α as the axial-to-equatorial F–Te–F angle and β as the angle between the two equatorial F atoms in an AX₄E seesaw model. γ and δ are Cl–Se–Cl and O–Se–Cl angles in pyramidal SeOCl₂. Use the elementary repulsion model in which the lone pair compresses the equatorial bonds and the multiple bond exerts more angular repulsion than a single bond. Which comparisons follow?

TestHub · Accepted Answer

The equatorial lone pair in AX₄E compresses the angle between equatorial bonding pairs below120°. An axial-equatorial angle cannot exceed180°. The stronger repulsion of the Se=O direction expands O–Se–Cl relative to Cl–Se–Cl in the specified elementary comparison. A lone pair, a multiple bond and single bonds are not equivalent domains, so D is false.

Chemistry - CHEMICAL BONDING Question with Solution | TestHub

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