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Which of the following will have higher ionization enthalpy : Cl- or F- ?Also please explain why.
chlorine will have more higher ionisation enthalpy than flourine because after losing one electron chlorine gets nobel gas slability.
correct answer should be-F > Cl > Cl- > F- because Fluorine is most electronegative element (EN 4) Chlorine has EN less then fluorine (EN 3.5) since there is a vacant d-orbital in chlorine, it could hold the extra electrons there. Fluorine does not have an extra vacant orbital, so it may loose the extra electron easily.
correct answer should be-
F > Cl > Cl- > F- because
Ionisation energy of Cl- is more than that of F- because addition of an electron to Cl gives more energy than in F so removal from Cl- requires more energy
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