What are the factors which influence electromagnetic energy '?

Explanation

Factors effecting of electron affinity
1. Nuclear Charge : If nuclear charge increases electron afffinity increases , similarly it decreases if nuclear charge decreases.
2. Screening effect :If screening effect value increaes electron affinity increases of it decresaes electron affinity increases if it decreases .
3. Penetration power of the orbitals : If pentration power of the orbitals increases electron affinity increases . If it decreases electron affinity decreases.
4. Stable configuration : If an atomic has stable electron configuration electron effinity will decreases .
5 . Atomic radius : if atomic radius increases electrons affinity will be increases if atomic radius decreases electron affinity decreases .
6. Metallic property : If metallic property increases electron affinity decreases .
7. Non- metallic property :Non - metallic property increases electron affinity value increases.