Of the following elements,which one has the highest electronegativity?

Which one of the following represents the correct order of electronegativity?

In which molecule does the chlorine atom have a positive partial charge?

Consider the following.
Statement-$I$ : The order of electronegativity of $B, Al, In, Tl$ is $B > Tl > Al > In$.
Statement-$II$ : Boric acid is a weak protonic acid.
The correct answer is

The electronegativity of $C$,$H$,$O$,$N$ and $S$ are $2.5$,$2.1$,$3.5$,$3.0$ and $2.5$ respectively. Which of the following bonds is most polar?

Which of the following is the correct decreasing order of electronegativity values?