What is the trend for electron affinity?

Related questions

1. Why does atomic radius decrease across a period and increase down a group?
2. What is classification of elements?
3. What is Electropositivity?
4. What is the reason for the trend in electronegativity?
5. Why is O more electronegative than N?
6. What is the trend in melting points across a period of elements?
7. What are the merits of Mendeleev periodic table?
8. Why does melting and boiling point increase down Group 7?
9. Why is Cl more electronegative than F?
10. What are the demerits of Mendeleev's periodic table?

Tags

1. #increases
2. #rules
3. #trends
4. #orbital
5. #energy
6. #quantum
7. #becomes
8. #electron
9. #affinities
10. #periodic
11. #ionization
12. #negative
13. #affinity
14. #group
15. #number
16. #principal
17. #there
18. #govern