What is emprical evidence and what is not?

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.

How hot is the suns corona? (integrated science)

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.