What are the observed periodic trends in electron affinity?

[Universe]

What are the observed periodic trends in electron affinity?

Check all that apply.

1.) for main-group elements, electron affinity generally becomes more negative as you move to the right across a row
2.) for main-group elements, electron affinity generally becomes more positive as you move to the right across a row
3.) there is not a corresponding trend in electron affinity going right across a row

4.) for main-group elements, electron affinity generally becomes more negative as you move down a column
5.) for main-group elements, electron affinity generally becomes more positive as you move down a column
6.) there is not a corresponding trend in electron affinity going down a column

[Cheyenne]

Decreases (more neg) across a period

[Unregistered]

инженер конструктор вакансия уфа

[Unregistered]

работа в донецке пролетарский район