Answer :

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