40) When an electron jumps from an orbit where n=4 to one where n=2
A) a photon is emitted
B) a photon is absorbed
C) two photons are emitted
D) two photons are absorbed
a
one electron is moving from one place to another. it is not a series of jumps like from 4 to 3 then 2, just one jump. from higher n level to lower n level, photons are emitted, from lower n to higher n, they are absorbed.
