Which of the following compounds has the lowest melting point?
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.
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As the covalent character increases down the group the melting point among the given species.
Option 1)
This option is incorrect
Option 2)
This option is incorrect
Option 3)
This option is correct
Option 4)
This option is incorrect