Question

Describe Electron Affinity? ??

Answer 1

↪Electron Affinity↩

Answer is in attachment☝☝

Answer 2

The electron affinity of an atom or molecule is the propensity for that particle to gain an electron. This is an exothermic process for all non-noble gas elements.

There are general trends in electron affinity across and down the periodic table of elements. 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.