Electronic Structure and Periodic Properties of Elements

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This is a 10 point assignment

Objectives: After completing this unit, students should be able to:

1. Describe the wave nature of electromagnetic radiation and list the various types of electromagnetic radiation by wavelength and frequency.
2. Knowing the speed of light, convert between wavelength and frequency of electromagnetic radiation.
3. Describe the essential features of Planck’s quantum theory and interconvert among wavelength, frequency and energy of a quantum.
4. Using the de Broglie equation, calculate particle wavelength given particle mass and velocity.
5. Explain the origin of the line spectra.
6. Describe the Bohr model of the hydrogen atom.
7. Calculate the energy difference between any two electronic states of a hydrogen atom and the wavelength or frequency of the photon involved in the transition.
8. Explain the significance of the wave function and the square of the wave function of an electron as they pertain to the orbital, electron density and probability.
9. Describe the Heisenberg uncertainty principle.
10. Explain the physical significance of each quantum number and know the restrictions on possible values.
11. Describe the shapes and orientations in space of the s and p atomic orbitals.
12. Use the Aufbau principle, the Pauli exclusion principle and Hund’s rule to predict how electrons will fill orbitals in an atom.
13. Give the electronic configuration of atoms.
14. Predict and explain the relative sizes of atoms based on their positions in the periodic table.
15. Predict the relationship between the size of a neutral atom and its ions.
16. Define ionization energy and electron affinity.
17. Predict and explain the ionization energies of atoms based on their positions in the periodic table.
18. Describe the periodic trends in metallic and nonmetallic character.

Reading and Homework Exercises

Table of Contents from: OpenStax Chemistry 2e: Chapter 6

Objective 1-3 Practice – Questions 1-7  address conversions between wavelength, frequency, and photon energy of electromagnetic radiation.  Also, listing the various types of electromagnetic radiation by wavelength, energy and frequency is covered.

You might find the following reading in OpenStax helpful:

Introduction

6.1 Electromagnetic Energy

Question 1:

Question 2:

Question 3:

Question 4:

Question 5:

Question 6:

Question 7:

Objective 6 and 7 Practice – Questions 8-11 allow you to practice calculations involving transitions of electrons between energy levels in the hydrogen atom using the Bohr model.

You might find the following reading in OpenStax helpful:

6.2 The Bohr Model

Question 8:

Question 9:

Question 10:

Question 11:

Objective 6 Practice – Questions 12 and 13 look at concepts of the Bohr model.

Question 12:

Question 13:

Objective 4 Practice – Question 14 allow you to practice calculating calculate particle wavelength given particle mass and velocity using the de Broglie equation.

You might find the following reading in OpenStax helpful:

6.3 Development of Quantum Theory

Question 14:

Objective 10 Practice – Question 15-18 are questions concerning the meaning of quantum numbers and their possible values.

You might find the following reading in OpenStax helpful:

6.3 Development of Quantum Theory

Question 15:

Question 16:

Question 17:

Question 18:

Objective 12 and 13 Practice – Questions 19-21 allow you to practice writing electron configurations and test understanding of the Aufbau principle, Hund’s rules, and the Pauli Exclusion Principle

You might find the following reading in OpenStax helpful:

6.4 Electronic Structure of Atoms (Electron Configurations)

Question 19:

Question 20:

Question 21:

Objective 14-18 Practice – Questions 22-27 check your understanding of periodic trends

You might find the following reading in OpenStax helpful:

6.5 Periodic Variations in Element Properties

Question 22:

Question 23:

Question 24:

Question 25:

Question 26:

Question 27: