SF4 has Exactly 5 Electron Pairs Around Central Atom

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The discussion centers on identifying which chemical species has exactly five pairs of electrons around its central atom. The correct answer is identified as SF4. The reasoning provided emphasizes the importance of counting valence electrons rather than involving d-orbitals in the analysis. For ClF5, the total is 12 valence electrons, resulting in six pairs. The same counting method applies to the other options, confirming that only SF4 fits the criteria of having five pairs of electrons around the central atom.
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The question is: Which species has exactly five pairs of electrons around
the central atom?
(A) ClF5 (B) SF4 (C) SF5– (D) XeF4

The answer is B. Can someone explain why? I'm not too good with these geometries that use the d-orbital.
 
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There are no d orbitals involved. You just have to count the number of valence electrons. In the first example there are 7 electrons from Cl and 5 from Fluorine, i.e. 12 in total or six pairs. Analogously for the other cases.
 

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