Chemical BondinghardMCQ SINGLE

According to Bent's Rule, which of the following statements correctly explains the preferred geometrChemical Bonding Chemistry Question

Question

According to Bent's Rule, which of the following statements correctly explains the preferred geometry of the $PCl_3F_2$ molecule?

Answer: B

💡 Solution & Explanation

Bent's Rule states that more electronegative substituents strongly prefer hybrid orbitals having less s-character. In a trigonal bipyramidal geometry ($sp^3d$), the axial positions are formed by $p_z$ and $d_{z^2}$ orbitals (virtually 0% s-character), while equatorial positions ($sp^2$) have 33.3% s-character. Thus, Fluorine occupies the axial sites.

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