Question

Cl and F belong to group 17. Which one will be the most electro negative and why?​

Answer 1

Answer:

Fluorine is more electronegative..

Explanation:

Fluorine is in fact the most electronegative element in the whole periodic table..

The reasons are as follows..

1) It's just one elctron away from it's Noble gas configuration.

2) It has the most effective nuclear charge of all elements due to its small size(However this causes repulsive forces as well due to which Chlorine has a higher electron gain enthalpy than Fluorine).

Hope it helps..