Question

The element with highest electronegativity will
belong to
(1) Period 2, group 17 (2) Period 3, group 17
(3) Period 2 group 18 (4) Period 2, group 1​

Answer 1

Answer: 1)Period 2, Group 17(corresponds to Fluorine)

Explanation: Electronegativity increases as you move across the groups from left to right, as more and more electrons are filled in the same principal shell which increases inter-electronic repulsions, and increases nuclear shielding. Further, as an extra shell is added as we move down a group, the hold of nucleus over the outermost electron decreases as an extra shell is added with every subsequent period. Thus, the elements lying in lower period and higher group number(exclude 18) exhibit greater electronegativity.

The reason why Group 18 is not electronegative lies in its extra-stable completely filled configuration; it doesn't gain any stability by gaining or losing electrons.

Answer 2

Answer:

the answer is option no one