Question

The least electronegative element has the following electronic configuration
1) ns2np5
2)ns2np4
3)ns2np3
4)ns2np6
(Reply wid reason)

Answer 1

ns2np6 bcoz it has completely filled electronic configuration and to give electrons to it we have supply energy from outside. so it has + E.G.E.

Answer 2

Answer: The correct answer is Option 4.

Explanation:

Electronegativity is defined as the tendency of an atom to attract the shared pair of electron towards itself. This property is shown by the elements which does not have stable electronic configurations.

Elements that belong to group 18 or the noble gases do not show electronegativity and are least electronegative elements in the periodic table.

From the given options:

The configuration that belong to group 18 is $ns^2np^6$ where n is the number of period.

Hence, the correct answer is Option 4.