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  4. Melting point of calcium halides decreases in the order

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Q. Melting point of calcium halides decreases in the order

The s-Block Elements

Solution:

For a particular alkaline earth metal, ionic character of different halides decrease as $MF_2 >\, MCl_2 >\, MBr_2 > \,MI_2 $ due to increase in anionic size. Thus their melting points also follow the order. $MF_2 > \,MCl_2 >\, MBr_2 >\, MI_2 $