Effective Nuclear Charge|Electron Affinity

Electron affinity is

Electron affinity of :

The size of any species depends on various factors such as nature of charge, magnitude of charge/oxidation state, effective nuclear charge, electronic configuration etc. It has been observed that size of Indium (In) ~~ Thallium (TI). This can be attributed to:

The size of any species depends on various factors such as nature of charge, magnitude of charge/oxidation state, effective nuclear charge, electronic configuration etc. Select the order of size which are correct?

The electron affinity of

Periodic Properties || Effective Nuclear Charge || Screening or Shielding Effect || Calculation OF Slater Constant || Variation OF Zeff along Group and Period