Figure Q29.20 shows the energy \(\quad E(\mathrm{eV})\) levels of a hypothetical atom. \(\quad(n+1) p\)

a. What minimum kinetic energy (in \(\mathrm{eV}\) ) must an electron have to collisionally excite this atom and cause the emission of a \(620 \mathrm{~nm}\) photon? Explain.

b. Can an electron with \(K=6 \mathrm{eV}\) cause the emission of \(620 \mathrm{~nm}\) light? If so, what is the final kinetic energy of the

c. Can a \(6 \mathrm{eV}\) photon cause the emission of \(620 \mathrm{~nm}\) light from this atom? Why or why not?

d. Can a \(7 \mathrm{eV}\) photon cause the emission of \(620 \mathrm{~nm}\) light from this atom? Why or why not?

Transcribed Image Text:

E (eV) 7 5 3. (n+1)p (n+)s 620 nm np ns 0 Ground state FIGURE Q29.20