Which element has the highest electronegativity?

Which of the following electronic configurations will have nearly zero electronegativity?

The element with the highest electronegativity value after fluorine $(F)$ is:

Which of the following electronegativity orders is incorrect?

The molecule with the most polar bond is:

Assertion : Electron affinity refers to an isolated atom's attraction for an additional electron while electronegativity is the ability of an atom of an element to attract electrons towards itself in a shared pair of electrons.
Reason : Electron affinity is a relative number and electronegativity is experimentally measurable.