According to the Bohr model of an atom, what happens when an electron moves from the second energy level to the third energy level and then back to the second energy level? Energy is absorbed and then stored in the atom.
Energy is released and then absorbed to form an absorption line.
Energy is absorbed and then released to form an emission line.
Energy is released from the atom, and the outer level is weakened.

Aaspirin has a density of 1.40 g/cm^3 what is the volume in cubic centimeters of a tablet weighing 320 mg?

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.