Question

# An element X (2, 8, 2) combines separately with $$NO_3$$ and $$(SO_4)_2$$, $$(PO_4)_3$$ radicals. Write the formulae of the three compounds so formed. To which group of the periodic tables does the element 'X' belong? Will it form covalent or ionic compound? Why?

Solution

## X(2,8,2) - This element is Magnesium. It belongs to group 2 of the periodic table.$$Mg^{2+}+NO_{3}^{-} \rightarrow Mg(NO_{3})_{2}$$[Magnesium Nitrate]$$Mg^{2+}+(SO_{4})^{2-} \rightarrow Mg(SO_{4})$$[Magnesium Sulphate]$$Mg^{2+}+(PO_{4})^{3-} \rightarrow Mg_{3}(PO_{4})_{2}$$[Magnesium Sulphate]Element X which is Magnesium will form ionic compounds by losing 2 electrons from its valence shell.Chemistry

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