
energy levels
... Bohr’s theory of hydrogen (1913): • An obsolete theory which has been replaced by quantum mechanics. • The model can still be used to develop ideas of energy and angular momentum quantization in atomic-sized systems. Assumption 1: The electron moves in circular orbits around the proton under the ele ...
... Bohr’s theory of hydrogen (1913): • An obsolete theory which has been replaced by quantum mechanics. • The model can still be used to develop ideas of energy and angular momentum quantization in atomic-sized systems. Assumption 1: The electron moves in circular orbits around the proton under the ele ...
Lecture notes 2: Quantum mechanics in a nutshell
... can be built up by neglecting electron spin (but do keep the exclusion principle). This means any electron configuration can have two electrons — one with spin up, the other with spin down. Assume further that each electron moves in a central field which is the combined field of the nucleus and all ...
... can be built up by neglecting electron spin (but do keep the exclusion principle). This means any electron configuration can have two electrons — one with spin up, the other with spin down. Assume further that each electron moves in a central field which is the combined field of the nucleus and all ...
Slide 1
... 4. Some of these photons run in a direction parallel to the ruby's axis, so they bounce back and forth off the mirrors. As they pass through the crystal, they stimulate emission in other atoms. ...
... 4. Some of these photons run in a direction parallel to the ruby's axis, so they bounce back and forth off the mirrors. As they pass through the crystal, they stimulate emission in other atoms. ...
General Chemistry - Review for final exam: (Make sure you bring
... 74. What types of products are you likely to find in a double-replacement reaction? 75. How can you identify a Combustion reaction by the reactants and products? 76. What values in a chemical equation are used to calculate molar ratios between different compounds? 77. What values are used to calcula ...
... 74. What types of products are you likely to find in a double-replacement reaction? 75. How can you identify a Combustion reaction by the reactants and products? 76. What values in a chemical equation are used to calculate molar ratios between different compounds? 77. What values are used to calcula ...
Atomic Structure Notes
... where n is an integer, h is Planck’s constant and ν is the frequency of the electromagnetic radiation absorbed or emitted. 2. Energy is in fact quantized and can only occur in discrete units of size hv. Each of these small "packets" of energy is called a quantum (or a photon when we are talking abou ...
... where n is an integer, h is Planck’s constant and ν is the frequency of the electromagnetic radiation absorbed or emitted. 2. Energy is in fact quantized and can only occur in discrete units of size hv. Each of these small "packets" of energy is called a quantum (or a photon when we are talking abou ...
Some Quantum Considerations II
... Which of the following statements is false? a. Longer wavelength radiation carries higher energies. b. Light can be considered to be made up of particles called photons. c. All material objects have some wave characteristics. d. Electrons can be viewed as standing waves in an atom. e. Bohr’s model o ...
... Which of the following statements is false? a. Longer wavelength radiation carries higher energies. b. Light can be considered to be made up of particles called photons. c. All material objects have some wave characteristics. d. Electrons can be viewed as standing waves in an atom. e. Bohr’s model o ...
Reactions I Can..
... 8. Trace the changes in atomic theory starting with Dalton and ending with the modern quantum mechanical model. 9. Describe the basic properties of alpha, beta, and gamma radiation. 10. Explain why some atomic nuclei are unstable 11. Predict the type of nuclear decay that will occur given the compos ...
... 8. Trace the changes in atomic theory starting with Dalton and ending with the modern quantum mechanical model. 9. Describe the basic properties of alpha, beta, and gamma radiation. 10. Explain why some atomic nuclei are unstable 11. Predict the type of nuclear decay that will occur given the compos ...
Chemical reactions revision
... Atoms are the units that elements are built from Atoms are so tiny that they cannot be seen even with powerful microscopes The atoms of each element are different to each other, but have a similar structure. ...
... Atoms are the units that elements are built from Atoms are so tiny that they cannot be seen even with powerful microscopes The atoms of each element are different to each other, but have a similar structure. ...
2A Final Exam Review Worksheet
... 1. If the density of aviation fuel is 1.77 lb/L, how many liters must be added to a tank to give 16,131 kg (1 kg= 2.205 lb)? 2. Count the total number of protons, neutrons, and electrons: protons neutrons electrons ...
... 1. If the density of aviation fuel is 1.77 lb/L, how many liters must be added to a tank to give 16,131 kg (1 kg= 2.205 lb)? 2. Count the total number of protons, neutrons, and electrons: protons neutrons electrons ...
AP Chem II Instructor: Mr. Malasky Name Period ______ Due Date
... ____ 1. The Heisenberg uncertainty principle states that a. electrons have no momentum b. the position of an electron is impossible to determine c. the faster an electron moves, the more unreliable is its energy d. the momentum and the position of an electron cannot be precisely defined simultaneous ...
... ____ 1. The Heisenberg uncertainty principle states that a. electrons have no momentum b. the position of an electron is impossible to determine c. the faster an electron moves, the more unreliable is its energy d. the momentum and the position of an electron cannot be precisely defined simultaneous ...
Electron Configuration and New Atomic Model
... • It was also shown that interference occurs when waves overlap, causing a slight decrease in energy. ...
... • It was also shown that interference occurs when waves overlap, causing a slight decrease in energy. ...
CHEMISTRY CHAPTER 5 OUTLINE NOTES 5.1 – Light and
... the same manner as Earth is in orbit around the sun. This is sometimes called the planetary atomic model or Bohr’s Model. o So a hydrogen atom should be similar to a solar system consisting of a sun and one planet. o Scientists began to unravel the puzzle of chemical behavior in the early 1900’s and ...
... the same manner as Earth is in orbit around the sun. This is sometimes called the planetary atomic model or Bohr’s Model. o So a hydrogen atom should be similar to a solar system consisting of a sun and one planet. o Scientists began to unravel the puzzle of chemical behavior in the early 1900’s and ...
Quantum Mechanics Problem Set
... (b) De Broglie states that electrons demonstrate the properties of both particles and waves and that each moving particle has a wave associated with it. A wave function is the mathematical description of the matter wave of an electron. (c) Although we cannot predict he exact location of an electron ...
... (b) De Broglie states that electrons demonstrate the properties of both particles and waves and that each moving particle has a wave associated with it. A wave function is the mathematical description of the matter wave of an electron. (c) Although we cannot predict he exact location of an electron ...
6.1 Organizing the Periodic Table
... There are forces of attraction between molecules they are not strong as ionic or covalent bonds but they are strong enough to hold molecules together in a solid or a liquid ...
... There are forces of attraction between molecules they are not strong as ionic or covalent bonds but they are strong enough to hold molecules together in a solid or a liquid ...
Shapes of the Charge Clouds
... •These areas are cloud-like with a fairly large space being filled by a few tiny electrons (e.g. fan blades) •Therefore, the electron cloud takes up most of the space of the atom, while the small, dense nucleus fills the center. ...
... •These areas are cloud-like with a fairly large space being filled by a few tiny electrons (e.g. fan blades) •Therefore, the electron cloud takes up most of the space of the atom, while the small, dense nucleus fills the center. ...
Quantum Mechanical Model - Elmwood Park Memorial Middle School
... • These slides are on the webpage if you would like them. ...
... • These slides are on the webpage if you would like them. ...