a) PBr Electronegativity Values: Phosphorus (P): 2.19 Bromine (Br): 2.96 Bond Polarity Calculation: Pr: 2.96 2.19 = 0.77 (polar covalent bond) Molecular Shape: Trigonal pyramidal Polarity: The molecule is polar due to the difference in electronegativity and the asymmetrical shape. Net Polarity: 0.77 b) TeI Electronegativity Values: Tellurium (Te): 2.10 Iodine (I): 2.66 Bond Polarity Calculation: Te: 2.66 2.10 = 0.56 (polar covalent bond) Molecular Shape: Bent (angular) Polarity: The molecule is polar due to the difference in electronegativity and the bent shape. Net Polarity: 0.56 c) NFCl Electronegativity Values: Nitrogen (N): 3.04 Fluorine (F): 3.98 Chlorine (Cl): 3.16 Bond Polarity Calculations: N: 3.98 3.04 = 0.94 (polar covalent bond) Nl: 3.16 3.04 = 0.12 (slightly polar covalent bond) Fl: 3.98 3.16 = 0.82 (difference between F and Cl, not a direct bond) Molecular Shape: Trigonal pyramidal Polarity: The molecule is polar due to the strong N bond and the asymmetrical shape. Net Polarity: 0.62 d) CClF Electronegativity Values: Carbon (C): 2.55 Chlorine (Cl): 3.16 Fluorine (F): 3.98 Bond Polarity Calculations: C: 3.98 2.55 = 1.43 (highly polar covalent bond) Cl: 3.16 2.55 = 0.61 (polar covalent bond) Fl: 3.98 3.16 = 0.82 (difference between F and Cl, not a direct bond) Molecular Shape: Tetrahedral Polarity: The molecule is polar due to the arrangement of polar bonds. Net Polarity: 0