In a ground state atom of S how many electrons total will have the quantum number l=0?

Consider a helium ion with one electron in the ground state. It turns out that it would take about 28 eV to remove this electron through ionization. Blue photons have an energy of about 4 eV. Can this electron emit about 7 blue photons. Is this true? Why or why not?

In a ground state atom of As how many electrons total will have the quantum number l=2?

If n = 3, how many total orbitals are there in that energy level?

This energy diagram shows the allowed energy levels of an electron in a certain atom. (Note: the SI prefix 'zepto' means -21 10 . You can find the meaning of any SI prefix in the ALEKS Data tab.) 1400 energy (z)) 1200- 1000 500 600. 400 200 -B TⓇ A Use this diagram to complete the table below. What is the energy of the electron in the ground state? What is the energy of the electron in the first excited state? If the electron makes the transition shown by the red arrow, from A to C, will a photon be absorbed or emitted? Calculate the wavelength of the photon that would be absorbed or emitted. Round your answer to 3 significant digits. absorbed O emitted nm

1. A mercury atom emits light at many wavelengths, two of which are at (1) 404.7 nm and (2) 435.8 nm . Both of these transitions are to the same final state. Determine the energy of each emitted wavelength (in J).

The n quantum number of an atomic orbital is 5. What are the possible values of l? What are the possible values of me if the & quantum number is 5?

The lowest five energy states in the Helijum atom (Z=2) have the following energy levels (assuming at least one electron is in the ground state.) Зр; -1,4eV _3s; -1.7eV _2p; -3.4eV _2s; -4.0eV _1s; -24.5eV A) Find one wavelength of light that you could shine on a collection of helium atoms to make a laser. Consider selection rules for all transitions. Explain your reasoning!! B) What wavelength(s) would the output laser beam have? C) Calculate the quantum efficiency of the laser.