Where are noble gases located on the periodic table?

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

What is the mass of each element in a 324.8 sample of co2

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.