Exam 9: Atomic Physics

For a specific element, photons of how many different energies could be emitted by electrons in the n = 2 level as they return to the n = 1 level?

Who discovered the nucleus of the atom in 1911?

The most modern model of the atom is known as the ______________ model.

Which of these colors of light has photons of greatest energy?

Which of these colors of light has photons of lowest energy?

The nuclear model of the atom is associated with

Discrete wavelengths of light are emitted by an excited gas because

The lowest energy level of a hydrogen atom (n = 1) is called

Dispersing light from a hot, low-pressure gas gives a spectrum of the type known as (two words) ______________ ______________.

When fast electrons strike a metal target, what are produced?

The quantity h in the Bohr theory is called ______________.

The calculation of electron energy levels in the hydrogen atom was done first by

Wilhelm Roentgen discovered

A quantum of electromagnetic radiation is called a(n)

For a specific element, photons of how many different energies could be emitted by electrons in the n = 6 level as they return to the n = 1 level?

The n = 2 energy level is known as the (two words) ______________ ______________ state.

The development of physics prior to 1900 is called

The energy differences in some of the rotational energy levels of the water molecule allow

The lines in the visible region of the hydrogen spectrum are known as the

The development of physics prior to about 1900 is called ______________ physics.