Exam 28: Atomic Physics

Of the various wavelengths emitted from a hydrogen gas discharge tube,those that are associated with transitions from higher levels down to the n = 1 level produce which of the following?

A ruby laser can deliver a 4.33-J pulse in approximately 50 nanoseconds.The wavelength of the light is 694 nm.At least how many atoms within the ruby rod had to be excited to allow this high-energy laser pulse? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.6 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

The wavelength of coherent ruby laser light is 694 nm.What energy difference exists between the upper excited state involved and the lower unexcited ground state? (h = 6.63 × 10−³⁴ J⋅s,c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10−¹⁹ J,and 1 nm = 10−⁹ m)

When a cool gas is placed between a glowing wire filament source and a diffraction grating,the resultant spectrum from the grating is which one of the following?

How many electrons are in chlorine's (atomic number 17)next to outer shell (n = 2)?

If a hydrogen atom,originally in its ground state of energy -13.6 eV,absorbs a photon of energy 15.9 eV,what is the resulting kinetic energy of the electron if the proton has negligible kinetic energy?

A hydrogen atom in the ground state absorbs a 13.32-eV photon.To what level is the electron promoted? (The ionization energy of hydrogen is 13.6 eV).

Using quantum theories to study the hydrogen atom allows the prediction and experimental verification of many data about atoms such as He⁺ and Li²⁺.Some quantities that can successfully be predicted about He⁺ and Li²⁺ in this manner are:

The quantum mechanical model of the hydrogen atom requires that if the orbital quantum number = 4,there will be how many permitted orbital magnetic quantum numbers allowed?

Aluminium has atomic number 13.In its ground state,how many electrons are in its n = 1 shell?

Characteristic x-rays are the result of

What is the wavelength of the line in the Paschen series of hydrogen that is comprised of transitions from the n = 5 to the n = 3 levels? (R = 1.097 × 10⁷ m−¹ and 1 nm = 10−⁹ m)

How many electrons are in chromium's (atomic number 24)next to outer shell (n = 3)?