Question

Element ‘X’ forms a chloride with the formula XCl2, which is a solid with high melting point. X would most likely be in the same group of the periodic table as:
(a) Si
(b) Mg
(c) Al
(d) Na
explain it​

Answer 1

Explanation:

From the formula XCl2 we see that one atom of X combines with 2 atoms of Cl this means X has a valency of 2, and Magnesium has a valency of 2. Also, note that Magnesium chloride's formula is MgCl2

Therefore, Element 'X' would most likely be in the same group of the periodic table as Magnesium

Answer 2

(b)$\huge\tt{Magnesium (Mg)}$

Because Mg has the valency 2 which is same as the group (a) Na (b) Mg (c) AI (d) Si

Also Mg when combines chloride forms MgCl2.