What is the concentration of ammonia in a solution if 20.4 mL of a 0.113 M solution of HCl are needed to titrate a 100.0 mL sample of the solution

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.