Which element within period 2 generates greatest force of attraction between its nucleus and its valence electrons?

In period 2, the element that generates the greatest force of attraction between its nucleus and its valence electrons is fluorine. This is due to its high atomic number (9 protons), which creates a strong positive charge in the nucleus, and its relatively small atomic radius. The increased effective nuclear charge leads to a stronger attraction for the valence electrons, making fluorine highly electronegative.