Exam 41: Atomic Physics

In a ruby laser, an electron jumps from a higher energy level to a lower one. If the energy difference between the two levels is 1.8 eV, what is the wavelength of the emitted photon? (c = 3.00 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

A collection of atoms has 20% of the sample in a state above the ground state. If these emit coherent radiation, what is the wavelength of the laser light produced? (c = 3.00 × 10⁸ m/s, h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

What is the correct electronic configuration for ground state carbon, which has 6 electrons?

What is the electron configuration for ground state Li, which has 3 electrons?

Which of the following are characteristics of laser light? (There may be more than one correct choice.)

If the principal quantum number of an electron is n = 5, which one of the following is NOT an allowed magnetic quantum number m_l for the electron?

What is the minimum speed needed by a ground-state hydrogen atom for its kinetic energy to be enough to ionize the atom in a collision? (1 eV = 1.60 × 10^-19 J, m_h ≈ m_proton = 1.67 × 10^-27 kg)

An electron in a hydrogen atom has orbital quantum number l = 7. How many possible values of the magnetic quantum number m_l could it have?

An electron in a hydrogen atom has orbital quantum number l = 4. How many possible values of the magnetic quantum number m_l could it have?

If two electrons in the same atom have the same four quantum numbers, then they must have the same energy.

An atom with 5 electrons is in its ground state. How many electrons are in its outermost shell?

Consider the n = 9 shell. (a) What is the largest value of the orbital quantum number, l, in this shell? (b) How many electrons can be placed in this shell?

What is the energy of an incident photon that is just enough to excite a hydrogen atom from its ground state to its n = 4 state?

A neutral atom has an electron configuration of 1s²2s²2p⁶3s²3p². How many protons does it have in its nucleus?

An electron in a hydrogen atom has principal quantum number n = 4. How many possible values of the orbital quantum number l could it have?

The normalized wave function for a hydrogen atom in the 1s state is given by ψ(r) = e^-r/α₀ where α₀ is the Bohr radius, which is equal to 5.29 × 10^-11 m. What is the probability of finding the electron at a distance greater than 7.8 α₀ from the proton?

If two electrons in an atom have the same energy, then they must have the same four quantum numbers.

If the orbital quantum number is l = 4, which one of the following is a possible value for the principal quantum number n?

How many electrons does it take to fill the d subshell?

The correct ground state electron configuration of boron, which has 5 electrons, is