1.

An element 'X' is liquid, non-metallic. Can you predict its position in the periodic table ?

Answer»

As the element 'X' is non-metallic, it may be belonging to group 17. In group 17, the first two elements are gases. Metallic character of elements (non-metals) increases on moving down the group. Therefore, the element 'X' may be located in group 17 and 3rd or 4th period of the periodic table.



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