Using the Pauling electronegativity values provided (H = 2.1, N = 3.0, O = 3.5, S = 2.5, Cl = 3.0, F = 4.0, C = 2.5, Br = 2.8), rank the following single bonds in order of increasing magnitude of the partial negative charge on the second atom listed.
1. S–Br
2. N–O
3. H–Cl
4. C–F
a) 4<3<2<1
b) 1<3<2<4
c) 1<2<3<4
d) 1<2<4<3