HI, I don't understand what is the oxidation number for SF5- and his meaning in this "complex"
The lewis structure of SF5 - is a central sulfur atom with 5 single bond with F atoms (or F- ions) and a lone pair on S.
a)Using the formula ,SF5- I should have: -1* 5(F atoms) + n.o S = -1
So n.o. S = +4 (verify: 4*1 -1*5 = -1 ...correct)
b) But if I see the structure and I apply the definition of Oxidation number, i.e. :" is the hypothetical charge that an atom would have if all bonds to atoms of different elements were 100% ionic, with no covalent component"
I have 5 bonds with F (more electronegative)...so should be +5
Why there is this difference?