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Element X forms a chloride with the form...

Element X forms a chloride with the formula `XCl_(2)`, which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as

A

Na

B

Mg

C

Al

D

Si

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The correct Answer is:
B
The formula of the chloride of th element is `XCl_(2)`. This means that the valency of the element X is 2 since chlorine is monovalent. The element with valency 2 is expected to be present in group 2 to which magnesium (Mg) belongs.
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