Exam 9: Atomic Physics

Which element was detected in the Sun before it was found on Earth?

Thomson discovered the ______________ in 1897.

Who developed the quantum theory in 1900 and has a constant named for him?

As the speed of an object increases, its wavelength

The transitions of an electron in the hydrogen atom to the n = 2 level result in the

Removal of an electron from an atom leaves a

The concept of matter waves reflects the observation that particles such as electrons sometimes act like ______________.

Doubling the wavelength of a photon would ______________ its energy.

The "plum pudding model" of the atom is associated with

Einstein won the Nobel Prize for explaining

When an electron goes from an excited state to the ground state,

If the energy of n = 6 is -0.378 eV and that of n = 5 is -0.544 eV in a hydrogen atom, a transition from n = 6 to n = 5 will _______________ a photon with an energy of approximately ______________.

Which is not a possible value for the principal quantum number n?