Element X forms a chloride with the formula $X C l_{2}$ , which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as______.

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Solution

The correct option is B Mg
The chemical formula for the given compound is $X C l_{2}$ and we know that valency of Cl is 1, therefore the valency of element X will be 2. Since, group 2 of the periodic table contains alkaline earth metals which have two valence electrons each (i.e. their valency is 2) so they can donate their two valence electrons to the two chlorine atoms to form the solid compounds of the form $X C l_{2}$ .

In the given elements, magnesium(Mg) is the only element that is present in 2nd group

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Element X forms a chloride with the formula XCl2, which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as______.

Element X forms a chloride with the formula $X C l_{2}$ , which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as______.