Author Question: For an atom of hydrogen without the effects of an external magnetic field, an electron transition ... (Read 60 times)

jessicacav

  • Hero Member
  • *****
  • Posts: 558
For an atom of hydrogen without the effects of an external magnetic field, an electron transition from the 3P subshell to the 2P subshell is called a forbidden transition. Why is this so?
  a. Electrons in hydrogen are forbidden from transitioning in that way due to peculiarities unique to solutions of Schrdinger's equation for hydrogen.
  b.The normal Zeeman effect prohibits certain transitions from occurring.
  c. Since the electron at low energies must pass through the nucleus, nuclear effects prevent certain transitions to orbits through the nucleus.
  d.An atom that changes energy through transitioning must either absorb or emit a photon.

Question 2

Which of the following states of the hydrogen atom, as defined only by the principal quantum number, angular momentum quantum number, and magnetic quantum number, is allowed?
 
a. n = 0, l = 2, ml = 1
  b. n = 5, l = 2, ml = 3
  c. n = 0, l = 1, ml = 2
  d. n = 5, l = 2, ml = 0
  e. n = 2, l = 2, ml = 0


Question 3

For an atom of hydrogen where the quantum number n = 3, how many possible independent configurations of the atom exist (consider principal quantum number n, angular momentum quantum number l, magnetic quantum number ml, and magnetic spin quantum number ms)?
 
a. 18
  b. 8
  c. 32
  d. 26
  e. infinite



Smiles0805

  • Sr. Member
  • ****
  • Posts: 305
Answer to Question 1

d.
A photon must be emitted when the electron transitions from n = 3 to n = 2, and the photon carries a specific angular momentum of l = 1. The transition from a P subshell to another Psubshell, both with angular momentum l = 2, is therefore forbidden.

Answer to Question 2

d.
The rules governing the configurations of the hydrogen atom are n > 0, l < n, and l ml. When n = 5, l must be 4 or less and when l = 2, ml must be 2 or less. The restrictions set by the solution to Schrdinger's equation are satisfie

Answer to Question 3

a.
For n = 3, l = 2, 1, 0; for each l, ml, = -l, -(l - 1), ..., (l - 1), l; and for each of the states given by n, l, and ml, ms = -1/2, 1/2. This corresponds to 18 individual states.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

For a complete list of videos, visit our video library