Question

Of the following elements, which is the MOST reactive?

A. F
B. Cl
C. Ar
D. Ne

Answer 1

(A)

Step-by-step explanation

Reactivity is an elements ability to gain an electron. So the better it is at "stealing" electrons, the more reactive it will be. The thing that makes fluorine so reactive is its electronegativity. Therefore, since fluorine has a higher electronegatvity than chlorine, fluorine is more reactive.

Answer 2

We can exclude Argon (Ar) and Neon (Ne) they are both very stable. Chlorine (Cl) is reactive but not as much as Fluorine (F). So my answer would be A.