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

Question

Quizplus · Accepted Answer

Statement 1 is correct: Schrödinger's model proposed that the energy of an electron is quantized, meaning it can only have certain discrete values. 
Statement 2 is incorrect: Schrödinger's equation does relate the energy of an electron in an atom to its wave function, but it does not involve mass or velocity. 
Statement 3 is incorrect: Schrödinger's model describes electrons as existing in orbitals, which are three-dimensional probability clouds around the nucleus, not in circular orbits.

Erwin Schrödinger Developed a Model for the Behavior of Electrons