Question

One of Bohr's assumptions about stable electron orbits in a hydrogen atom treated electrons as particles with circular orbits. Louis de Broglie made a different assumption about the electron and its stable orbits which turned out to be mathematically equivalent to Bohr' assumption.
What assumption did the Broglie make?

• A. The electron orbits the nucleus with elliptical-shaped orbits, like the planets around the sun
• B. The electron forms standing wave patterns that must fit a circular shape around the nucleus
• C. The electron follows a parabolic trajectory around the nucleus
• D. The electron behaves like a cloud, blocking out all radiation except radiation associated with allowable energy transitions
• E. The electron follows a hyperbolic trajectory around the nucleus

Answer 1

The correct option is B The electron forms standing wave patterns that must fit a circular shape around the nucleus

A major problem with Bohr's model was that it treated electrons as particles that existed in precisely-defined orbits. de Broglie made a different assumption about the electron and its stable orbits which turned out to be mathematically equivalent to Boh'r assumption. He assumed that the electron forms standing wave patterns that must fit a circular shape round the nucleus.