1.

Iron forms iron halides salts by reacting the metal directly with halogen. FeI_(3) does not exist. FeF_(3) is white soled inspite of five unpaired electronswith d^(5) configuration . FeCl_(3) is soluble in water and is used as a mordant in dyeing industry. Q.FeI_(3) does not exist because:

Answer»

of LARGE SIZE
`Fe^(3+)` oxidise `I^(-)` to `I_(2)`
of low LATTICE energy
iodine is not highly electronegative enough to oxidise Fe to `Fe^(3+)`

Answer :B


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