40. X and Y are oxides of different Period 3 elements. If three mole of Y is added to water, the solution formed is neutralised by exactly one mole of X. What could be the identities of X and Y ?+OroSO:PqOroSOs

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.