Endothermic Process of Forming a Cation

[alijan kk]

why formation of a cation an endothermic process, a potassium cation is smaller than potassium atom , doesn't that mea that heat is released ? lower energy atom(cation)

is that the reason that we put energy to ionize the atom? (heat absorbed endo thermic)

 

[Borek]

Size change has no correlation with the reaction heat.

Do you know what ionization energy is?

 

[alijan kk]

Size change has no correlation with the reaction heat.

Do you know what ionization energy is?

the energy we put to pull of the electron ,

 

[Borek]

And why is that ionization requires energy?