1.

Which one of the following orders is not in accordance with the property stated against is ?

Answer»

`HI gt HBr gt HCl gt Hf`: ACIDIC property in water
`F_2 gt Cl_2 gt Br_2 gt I_2` : Electronegativity
`F_2 gt Cl_2 gt Br_2 gt I_2` : Bond dissociation ENERGY
` F_2 gt Cl_2gt Br_2 gt I_2` : Oxidising power

Solution :Bond dissociation energy of fluorine is less because of its small size and REPULSION between electrons of two atoms. So option (C) is wrong ORDER.
The correct order is : `[Cl_2 gt Br_2 gtF_2 gtI_2]`


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