Which of the following has the highest electr | vedclass

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(C) Electron affinity $(EA)$ is defined as the energy released when an electron is added to a neutral gaseous atom to form a negative ion. However,for

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$Li^{+}$

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(C) Electron affinity $(EA)$ is defined as the energy released when an electron is added to a neutral gaseous atom to form a negative ion. However,for ions,we consider the electron gain enthalpy of the species. Among the given options,$F^{-}$,$Cl^{-}$,$Li^{+}$,and $Na^{+}$ are all ions. Anions like $F^{-}$ and $Cl^{-}$ already have a stable octet configuration and adding another electron would require energy (endothermic process),meaning they have negative electron affinity. Cations like $Li^{+}$ and $Na^{+}$ have a strong electrostatic attraction for electrons due to their positive charge. $Li^{+}$ has a smaller ionic radius compared to $Na^{+}$,resulting in a higher effective nuclear charge density,which makes it easier for $Li^{+}$ to attract an electron. Therefore,$Li^{+}$ has the highest electron affinity among the given options.

Which of the following has the highest electron affinity $(EA)$?

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Choose the correct answer from the options given below.

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