1.

Which of the following compounds has the lowest melting point ?

Answer»

`CaF_(2)`
`CaCl_(2)`
`CaBr_(2)`
`CaI_(2)`

Solution :As the size of the halogen increases from F to I , covalent CHARACTER increases from `CaF_(2)` to `CaI_(2)` and MELTING POINT decreases . So `CaI_(2)` has the LOWEST melting point .


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