The molecule SF4 doesn't have eight electrons like most atoms, it can expand the octet because sulfur has 6 valence electrons and each fluorine only needs one electron to share with sulfur so that leaves to remainder.
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CF4 Doesn't violate the Octet Rule, the rest do.
SF4 is not a resonance structure. It is a non-polar covalent molecule with polar bonds
The shape of SF4 is Sea Saw
sf4
The chemical formula for sulfur tetrafluoride is SF4.
One set of lone pairs is around sulfur in SF4.
SF4
SF4
The Molecule SF4 is Non-polar due to the fact that Fluorine is the most electronegative element in existence. Therefore the fluorine atoms evenly pull the molecule in four directions causing an even pull in the molecule and causing it to be non-polar
lCl3 = T- shaped XeF4 =Square planar SF4 =Seesaw H20 =Bent XeF2 =Linear
CF4 is a covalent bond, because both elements are "nonmetals"
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