The interhalogen compound icl3 can form but brcl3 cannot form. this is because A) iodine is large enough to accommodate three chlorine atoms around itself B) bromine is not electronegative enough to react with chlorine.
Interhalogen compounds are halogen subordinates. Compounds containing two distinct forms of halogens are referred to as interhalogen compounds.
Interhalogen compounds are covalent in nature.
More reactive than halogens because of low bond energy due to dissimilar size of atoms in molecule. As the molecule becomes a little polar the boiling point increases due to inter-molecular attraction.
They are reactive and unstable because of low bond energy,
Example: monofluoride chlorine, trifluoride bromine, pentafluoride iodide, heptafluoride iodide, etc.
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