Step 1: The total valence electrons of PF4Cl are:
Group Valence Electrons
P 5A 1 ×5 e- = 5 e-
F 7A 4 ×7 e- = 28 e-
Cl 7A 1 × 7 e- = 7 e-
Total: 40 valence e-
Step 2: P (EN = 2.1) is less electronegative than Flourine (EN = 4) and Cl (EN = 3) → P is the central atom
Consider the molecule PF4Cl.
Draw a Lewis structure for the molecule.
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