Chemistry, asked by ileenSamrangas, 1 year ago

What do you mean by succesive electron gain enthalpies.Why is second electron gain enthalpy of an atom is positive

Answers

Answered by appuzzzzakash
29
generally, energy is released when the first electron is added to an atom which results in  the formation of a monovalent  anion  . now , if another electron (second electron) is added to this anion ,it experiences  a repulsion  and energy is absorbed during the process  
therefore, the second and further successive electron affinity values are positive  
Answered by DisneyStar
5

Explanation:

Electron gain enthalpy when is done for another time, then it is called succesive electron gain enthalpy. Successive electron gain enthalpy is positive for 2nd time because when electron is added for the 2nd time, it will experience repulsion from the electrons already present, so energy must be provided so that the atom can take up that electron.

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