Erwin Schrödinger Developed a Model for the Behavior of Electrons

Multiple Choice

Erwin Schrödinger developed a model for the behavior of electrons in atoms that is known as quantum mechanics.Which of the following statements concerning this model is/are CORRECT?
1) The energy of an electron is quantized.
2) The energy of an electron is equal to its mass multiplied by the square of its velocity.
3) Electrons travel in circular orbits around a nucleus.

A) 1 only
B) 2 only
C) 3 only
D) 1 and 2
E) 1,2,and 3