Pop Quiz Topic 1

Who was the first scientist to propose that an object could emit only certain amounts of energy?

• Planck

• Einstein

• Bohr

• Rydberg

• de Broglie

Who proposed a model that successfully explained the photoelectric effect?

• Planck

• Einstein

• Compton

• Rydberg

• Bohr

Who developed an empirical equation from which the wavelengths of lines in the spectrum of hydrogen atoms can be calculated?

• Planck

• de Broglie

• Bohr

• Rutherford

• Rydberg

Which scientist first proposed that particles of matter could have wave properties?

• Einstein

• Planck

• de Broglie

• Compton

• Heisenberg

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

• Einstein

• Planck

• Bohr

• Rydberg

• Heisenberg

Who proposed the principle which states that one cannot simultaneously know the exact position and velocity of a particle?

• Einstein

• Planck

• Heisenberg

• Compton

• de Broglie

When other factors remain constant, a heavy object will have a longer de Broglie wavelength than a light object.

• True

• False

In the Bohr model of the hydrogen atom, the electron moves in a circular path which Bohr referred to as an orbital.

• True

• False

A wave function for an electron is called an atomic orbital.

• True

• False