Question

electron offinity ________ along a period.​

Answer 1

Explanation: ANSWER IS INCREASES

Electron affinity generally increases across a period in the periodic table and sometimes decreases down a group. These trends are not necessarily universal. The chemical rationale for changes in electron affinity across the periodic table is the increased effective nuclear charge across a period and up a group.

Answer 2

electron offinity _increases_______ along a period.