# Which of the following compounds has the lowest melting point? Option 1) $C_{a}Cl_{2}$ Option 2) $C_{a}Br_{2}$ Option 3) $C_{a}I_{2}$ Option 4) $C_{a}F_{2}$

V Vakul

As we learnt in

Nature of compounds formed by alkaline earth metals -

Be and Mg form covalent compounds other elements froms ionic compounds. This character increases down the group.

-

As the covalent character increases down the group the melting point among the given species.

Option 1)

$C_{a}Cl_{2}$

This option is incorrect

Option 2)

$C_{a}Br_{2}$

This option is incorrect

Option 3)

$C_{a}I_{2}$

This option is correct

Option 4)

$C_{a}F_{2}$

This option is incorrect

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