Exam 9: Atomic Physics

The development of physics since about 1900 is called

When the energy state of an atom changes by ΔE,the frequency of the photon emitted or absorbed is calculated by dividing ΔE by ______________.

Which is a possible value for the principal quantum number n?

Light from an incandescent wire disperses into a(n)______________ spectrum.

In the Bohr model,the higher the value of n,the farther from the nucleus the electron is located.In the quantum model,the higher the value of n,the farther from the nucleus the electron ______________ is located.

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 principal quantum number is symbolized by the letter ______________.

The nucleus of an ordinary hydrogen atom consists of a(n)______________.

Matter waves are also called ______________ waves.

The energy of a photon is ______________ proportional to its wavelength.

The concept of the dual nature of light indicates that light acts sometimes like a(n)______________ and sometimes like a(n)______________.

Calculate the energy E_n,in electron volts,of a hydrogen atom's electron with n = 5.

According to Planck's hypothesis,the energy of an oscillator is directly proportional to its

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

A quantum is a

Which is another name for quantum mechanics?

Niels Bohr postulated that the hydrogen electron radiates energy only when it makes a(n)______________ from one allowed orbit to another.

Calculate the de Broglie wavelength of a 0.145-kg baseball moving at a speed of 45.2 m/s.

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

Doubling the wavelength of a photon would ______________.