Question 8
What is electronegativity?
The right answer is the one marked above.
The ability of an atom to attract the electrons of a bond towards itself, when it is joined to another atom by a covalent bond.
The energy needed to remove an electron is the ionization energy — a related idea, but a different one. Ionization energy is about an electron leaving the atom altogether; electronegativity is about a shared electron being pulled closer.