Question

What are the observed periodic trends in electron affinity? Check all that apply. Check all that apply. for main-group elements, electron affinity generally becomes more negative as you move to the right across a row for main-group elements, electron affinity generally becomes more positive as you move to the right across a row there is not a corresponding trend in electron affinity going right across a row for main-group elements, electron affinity generally becomes more negative as you move down a column for main-group elements, electron affinity generally becomes more positive as you move down a column there is not a corresponding trend in electron affinity going down a column

Answer 1

A | The electron affinities of the elements in Group 17 are larger (more negative) than the elements in Group 1.

C | Elements in Group 14 have larger (more negative) electron affinities than elements in Group 15.

Answer 2

What are the trends and exceptions to the trends in electron affinity? Check all that apply.

a *The electron affinities of the elements in Group 17 are larger (more negative) than the elements in Group 1.

b Electron affinities increase (become more negative) down a group.

c *Elements in Group 14 have larger (more negative) electron affinities than elements in Group 15.

d Elements in Group 2 have very large electron affinities.