An atom of which element has the greatest attraction for electrons in a chemical bond?

(1) As (3) Ge

(2) Ga (4) Se

Answer is (4) - Se.

Among the given choices Se has the highest electronegativity value as 2.4 compared to others. Hence, Se shows greatest attraction for electrons in a chemical bond.

Electronegativity is a value that tells us how an atom can attract electrons towards itself. If the electronegativity is high, then the attraction to the electrons is also high.

An Atoms of Se has the greatest attraction for electrons in a chemical bond. It has a small atom though.