Calculate the orbital for the hydrogen atom that contains an electron with an energy of -4.45 × 10-20 J.

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.

Compare and contrast the bohr model and the electron cloud models of the atom.

What is the molar mass of a gas that has density of 2.054 g/l