1.

In case of alkali metals , the covalent character decreases in the order :

Answer»

`MI gt MBr gt MCl gt MF`
`MCl gt MI gt MBr gt MF`
`MF gt MCl gt MBr gt MI`
`MF gt MCl gt MI gt MBr`

Solution :ACCORDING to Fajan rules , as the size of the ANION , i.e., HALOGEN increases , the covalent CHARACTER increases and the ionic character decreases , i.e, option (a) is CORRECT .


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