What is the value of electron gain enthalpy o | vedclass

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(A) The ionization energy $(IE_{1})$ is the energy required to remove an electron from a neutral atom: $Na(g) \longrightarrow Na^{ }(g)   e^{-}(g) ; I

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$-5.1$

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(A) The ionization energy $(IE_{1})$ is the energy required to remove an electron from a neutral atom: $Na(g) \longrightarrow Na^{ }(g)   e^{-}(g) ; IE_{1} = 5.1 \ eV$.The electron gain enthalpy $(\Delta H_{eg})$ is the energy change when an electron is added to a gaseous ion to form a neutral atom,which is the reverse process of ionization: $Na^{ }(g)   e^{-}(g) \longrightarrow Na(g)$.According to the law of conservation of energy,the enthalpy change for the reverse process is the negative of the ionization energy: $\Delta H_{eg} = -IE_{1} = -5.1 \ eV$.

What is the value of electron gain enthalpy of $Na^{+}$ if $IE_{1}$ of $Na$ is $5.1 \ eV$? .......... $eV$

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