Answer:
It would be F
Step-by-step explanation:
The Number near the bottom of the little square known as electronegativity or Pauling is its "Reactivity". the higher the reactivity is the more likely it is to steal electrons from others. this also has to do with its atomic number. Your answer would be F, i'm not trying to steal credit from the other answer, just trying to describe it a little more that way you UNDERSTAND this stuff and dont have to look up any more stuff. Soon You'll be a master Chemist!