Question

Element ‘X’ chemically combines with element ‘Y’ to form an ionic compound XY2. What are ‘X’ and ‘Y’ a.Sodium and chlorine b.Carbon and oxygen c.Magnesium and chlorine d.Hydrogen and oxygen

Answer 1

Answer:

option c. magnesium and chlorine

Explanation:

since both form an ionic compound , it cannot be carbon and oxygen since they combine to give carbon dioxide which is not ionic. similarly hydrogen and oxygen combines to give X2Y(water) . sodium and chlorine give XY(NaCl) . so MgCl2 is the correct option as it is ionic product as well as follows the formula XY2