Question

which of these elements would be assigned the highest electronegativity value?

a.Br
b.Si
c.K
d.Ba

Answer 1

electronegativity:
Br= 2.96
Si= 1.90
K = 0.82
Ba= 0.89

So A is correct.
You can check electronegativity at http://www.ptable.com and go to tab properties and select electronegativity (5th option)

Answer 2

The one closest to fluorine. as fluroine has been shown to have the highest electronegativity at approximately 4.0-4.1

Answer 3

@abb0t how do you explain Gold having a higher electronegativity than Sillicon? Sillicon is way closer to fluorine :P