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Element X forms a chloride with the formula XCl2, Which is a solid with a high metingpoint, X would most likely be in the same group of the periodic table as :-
  • a)
    Na
  • b)
    Mg
  • c)
    Al
  • d)
    Si
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Element X forms a chloride with the formula XCl2, Which is a solid wit...
The correct answer is B as elements of group Na form XCl halide. 
Elements of group Mg form XCl2 halide. 
Elements of group Al form XCl3  halide. 
Elements of group Si form XCl4  halide. 
As an element, X forms a chloride with the formula XCl2  which is solid with a high melting point. X would most likely be in the same group of Mg. 
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Community Answer
Element X forms a chloride with the formula XCl2, Which is a solid wit...
As we know that Na has valency +1,
Mg has +2valency, Al has+3 valency and Si has+4 valency. as Cl has -1 valency so in compound xCl2 ,x could be Mg.And also Mg is solid with high melting point.
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