Question

List of elements in ascending order based on electronegativity difference

Answer 1

generally electronegativity increases from left to right in a period.
and from top to bottom decreases.
so we can arrange based on this criteria.
and highest electronegativity element is flourine.

Answer 2

in periodic table the increasing order of electronegativity is from left to write like
Li <Be <B <C <N <O<F like this