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QJEEM20Ch9bdb: JEE Main 2020 Chemistry - Class 11 JEEM20Ch9bdb Solution: The electron gain enthalpy (in KJ/mol) of fluorine, chlorine,…
The electron gain enthalpy (in KJ/mol) of fluorine, chlorine, bromine and iodine, respectively are:
Multiple Choice Options
- A -296, -325, -333 and -349
- B 349, -333, -325 and -296
- C -333, -349, -325 and -296
- D -333, -325, -349 and -296
Step-by-Step Verified Solution
Order of electron gain enthalpy (magnitude) is Cl > F > Br > I
Note: Electron gain enthalpy increases with electro negativity but chlorine has higher electron gain enthalpy than fluorine (exception).
Note: Electron gain enthalpy increases with electro negativity but chlorine has higher electron gain enthalpy than fluorine (exception).