Reaction With Strongly Electropositive Metals

Electropositive Character

From which of the following hydrocarbons may hydrogen be displaced by a strongly electropositive metal?

Assertion: Electropositive metals like Mg,A1 are extracted by electrolysis of their slat solutions. Reason: Highly electropositive metals cannot be reduced by chemical reduction methods.

Element X is strongly electropositive and element Y is strongly electronegative. Both are univalent. The compound formed would be