Question

Which best describes the trends in electronegativity on the periodic table?
Electronegativity increases up and to the right.
Electronegativity increases down and to the left.
Electronegativity decreases up and to the left.
Electronegativity decreases down and to the right.

Answer 1

Electronegativity increases up and to the right.

Reason: across a period effective nuclear charge rises (atoms pull electrons more strongly), and up a group atoms are smaller (less shielding), so highest values are toward fluorine at top-right.