which trend is increasing as indicated by the arrows? trend: electronegativity atomic radius (size)…

Brief Explanations:

In the periodic table, electronegativity increases across a period (left - to - right) and up a group (bottom - to - top). Atomic radius decreases across a period and increases down a group. Ionization energy increases across a period and up a group. The arrows indicate moving left - to - right across a period and bottom - to - top in a group, which is the trend of increasing electronegativity and ionization energy. Since electronegativity is listed first among the options, it is the most appropriate answer.

Answer:

ELECTRONEGATIVITY