Question

electronic configuration of four elements are give. Arrange these elements in increasing order of their electronegativity. Give reason
Na =2,8,1
S=2,8,6
Al=2,8,3
K=2,8,8,1
​

Answer 1

Answer: K, Na, Al, S

Reason: Elecronehetivity increases across a period from left to right and deacreases down a group from top to bottom

Answer 2

Answer: the order of lowest to highest electronegativity

k<Na<Al<S

Explanation:

k and Na are metals

metal doesnt do polar reactions

only non metals do

S is the only non metal element here

so sulfure has the highest electronegativity

also electronegetivity increases   as you go from left to right of the periodic table