Electronegativities of selected atoms and functional groups.
Atom or group | χ P | χ e | χ H | χ J |
---|---|---|---|---|
H | 2.20 | 2.28 | — | — |
F | 3.98 | 3.95 | — | — |
Cl | 3.16 | 3.03 | — | — |
Br | 2.96 | 2.80 | — | — |
I | 2.66 | 2.47 | — | — |
NO2 | — | 3.40 | — | — |
CN | — | 3.30 | — | — |
CF3 | — | 3.35 | 3.46 | 3.29 |
CHF2 | — | — | 3.00 | 2.94 |
CH2F | — | — | 2.61 | 2.61 |
CH3 | — | 2.30 | 2.27 | 2.30 |