Which of the following pairs of elements has the greatest difference in electronegativity?
Na and F
Na and CI
Na and Br
Na and I
Correct answer is A
- sodium has an electro negativity of 0.93
- Hence; sodium and flourine have the highest difference.
| Fluorine | 4.0 |
| Chlorine | 3.0 |
| Bromine | 2.8 |
| Iodine | 2.5 |