Exam 7: Quantum Theory and Atomic Structure

For all the allowed vibration(s) (wavelength(s)) of a plucked guitar string, what is the correct relationship between the length of the string, L, and the wavelength, $\lambda$ ?

Who proposed a model that successfully explained the photoelectric effect?

If the energy of a photon is 1.32 *10¯¹⁸ J, what is its wavelength in nm?

Infrared radiation from the sun has a wavelength of 6200 nm. Calculate the energy of one photon of that radiation.

Platinum, which is widely used as a catalyst, has a work function $\phi$ (the minimum energy needed to eject an electron from the metal surface) of 9.05*10¯¹⁹ J. What is the longest wavelength of light which will cause electrons to be emitted?

Which one of the following sets of quantum numbers can correctly represent a 3p orbital?

The energy of a photon is directly proportional to the wavelength of the radiation.

As the frequency of electromagnetic radiation increases, its wavelength also increases.

The energy of an electron in the hydrogen atom is determined by

Which scientist demonstrated that photons transferred momentum during collisions with matter?

In the quantum mechanical treatment of the hydrogen atom, the energy depends on the principal quantum number n but not on the values of l or m_l.

Select the arrangement of electromagnetic radiation which starts with the lowest wavelength and increases greatest wavelength.

Which scientist first proposed that the electron in the hydrogen atom can have only certain energies?

According to the Bohr theory of the hydrogen atom, the minimum energy (in J) needed to ionize a hydrogen atom from the n = 2 state is

The shape of an atomic orbital is associated with

A modern compact fluorescent lamp contains 1.4 mg of mercury. If each mercury atom in the lamp were to emit a single photon of wavelength 254 nm, how many joules of energy would be emitted?

Excited hydrogen atoms radiate energy in the

Line spectra are characteristic of atoms in the gas phase.

The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000. m/s is:

The AM station KBOR plays your favorite music from the 20's and 30's at 1290 kHz. Find the wavelength of these waves.