Why am I single I don't understand

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.

Helium decays to form lithium. which equation correctly describes this decay?

This statement about matter and its behavior is best classified as a