"Na+ is more stable Na because the energy provided to the sodium atom is utilized to remove the valence electron of the sodium atom while the
electron is removed from the sodium atom it libreates the excess energy associated with the electron the energy of the electron is utilized for the
other atom like electronegative atom to add the electron to form the respective anion.
Na (g) + energy ------> Na+ (g) + e- ( energy associated with the electron)
The energy associated with the libreated electron is utilized for the addition of the electron in the case of the electronegative atom
F (g) + e- -------> F- (g) + energy
so from the above two process we can conclude that the energy of the sodium ion is smaller than sodium atom because the energy libreated
by the electron is greater than the energy provided by the ionisation of the sodium atom so Na+ is more stable than Na atom."
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