Chapter 8: Periodic Properties of the Elements
... Energy required to remove the outermost ground state electron, endothermic Ionization Energy decreases from right to left; top to bottom of periodic table. The small nonmetals require the highest ionization energy, they do not want to lose electrons Large metals have lowest ionization energy, th ...
... Energy required to remove the outermost ground state electron, endothermic Ionization Energy decreases from right to left; top to bottom of periodic table. The small nonmetals require the highest ionization energy, they do not want to lose electrons Large metals have lowest ionization energy, th ...
section on Compton effect
... x-ray tube V by lm hc>eV. The wavelengths of the lines are characteristic of the element. becomes eV hf hc>lm or lm hc>eV 1.2407 106 V 1 m 1.24 103 V 1 nm. Thus, the Duane-Hunt rule is explained by Planck’s quantum hypothesis. (Notice that the value of lm can be used to determine ...
... x-ray tube V by lm hc>eV. The wavelengths of the lines are characteristic of the element. becomes eV hf hc>lm or lm hc>eV 1.2407 106 V 1 m 1.24 103 V 1 nm. Thus, the Duane-Hunt rule is explained by Planck’s quantum hypothesis. (Notice that the value of lm can be used to determine ...
PPT
... have no basis in physical reality. BUT the model does get some of the numbers right for SIMPLE atoms… ...
... have no basis in physical reality. BUT the model does get some of the numbers right for SIMPLE atoms… ...
1 eV
... have no basis in physical reality. BUT the model does get some of the numbers right for SIMPLE atoms… ...
... have no basis in physical reality. BUT the model does get some of the numbers right for SIMPLE atoms… ...
Quantum Physics
... Show an understanding that the photoelectric effect provides evidence for a particulate nature of electromagnetic radiation while phenomena such as interference and diffraction provide evidence for a wave nature It is well-known that only waves are able to exhibit phenomena such as interference and ...
... Show an understanding that the photoelectric effect provides evidence for a particulate nature of electromagnetic radiation while phenomena such as interference and diffraction provide evidence for a wave nature It is well-known that only waves are able to exhibit phenomena such as interference and ...
1. Larger a
... What is ionization? If an atom is hit by a sufficiently energetic photon, one of its electrons can be removed completely. The resulting atom is then said to be “ionized” An ionized atom is positively charged so it can not remain free for long before regaining the lost electron in some way or other ( ...
... What is ionization? If an atom is hit by a sufficiently energetic photon, one of its electrons can be removed completely. The resulting atom is then said to be “ionized” An ionized atom is positively charged so it can not remain free for long before regaining the lost electron in some way or other ( ...
Monday, Oct. 16, 2006
... • The pair production cross section is proportional to Z2 – Z: atomic number of the medium – Rises rapidly and dominates all energy-loss mechanisms for photon energies above 10MeV or so. – It saturates and can be characterized by a constant mean free path for conversion • A constant absorption coeff ...
... • The pair production cross section is proportional to Z2 – Z: atomic number of the medium – Rises rapidly and dominates all energy-loss mechanisms for photon energies above 10MeV or so. – It saturates and can be characterized by a constant mean free path for conversion • A constant absorption coeff ...
Lesson 9 – De Broglie Analysis
... 1. How would the diffraction patterns compare for fast moving electrons and slower moving electrons? 2. How would the diffraction patterns compare for a particle with greater mass than an electron (for example a neutron) if they were travelling at the same speed? 3. What is the relationship between ...
... 1. How would the diffraction patterns compare for fast moving electrons and slower moving electrons? 2. How would the diffraction patterns compare for a particle with greater mass than an electron (for example a neutron) if they were travelling at the same speed? 3. What is the relationship between ...
Chap. 7 - Quantum Chemistry
... consisting of particles, also have wavelike properties? On the basis of theoretical observations, Louis de Broglie suggested that all particles should be regarded as having wavelike properties. Therefore, it was proposed that: = h/p = h/mv where = wavelength, h = Planck’s constant, p = linear mo ...
... consisting of particles, also have wavelike properties? On the basis of theoretical observations, Louis de Broglie suggested that all particles should be regarded as having wavelike properties. Therefore, it was proposed that: = h/p = h/mv where = wavelength, h = Planck’s constant, p = linear mo ...
Vacuum
... But more systematic derivation is required ・ Unruh radiation are treated in a complete different way from Larmor radiation. ・ How does the path of the uniformly accelerated particle fluctuate? ・ The interference effect were not considered. ...
... But more systematic derivation is required ・ Unruh radiation are treated in a complete different way from Larmor radiation. ・ How does the path of the uniformly accelerated particle fluctuate? ・ The interference effect were not considered. ...
Detailed Notes CH. 6
... He proposed that energy can only be absorbed or released from atoms in certain amounts. These amounts are called quanta. A quantum is the smallest amount of energy that can be emitted or absorbed as electromagnetic radiation. • The relationship between energy and frequency is: E = h • where h is Pl ...
... He proposed that energy can only be absorbed or released from atoms in certain amounts. These amounts are called quanta. A quantum is the smallest amount of energy that can be emitted or absorbed as electromagnetic radiation. • The relationship between energy and frequency is: E = h • where h is Pl ...
R E V I E W -- P R A C T I C E E X A
... 79. The periodic law states that: a. The physical/chemical properties of the elements are periodic functions of their atomic number b. no two electrons with the same spin can be found in the same place at the same time. c. Electrons exhibit properties of both particles and waves. d. The chemical pro ...
... 79. The periodic law states that: a. The physical/chemical properties of the elements are periodic functions of their atomic number b. no two electrons with the same spin can be found in the same place at the same time. c. Electrons exhibit properties of both particles and waves. d. The chemical pro ...
PPT
... transition radiation (e.m. int.): when a charged particle crosses the boundary between two media with different speeds of light (different “refractive index”), e.m. radiation is emitted -- “transition radiation” amount of radiation grows with (energy/mass); bremsstrahlung (= braking radiation) ( ...
... transition radiation (e.m. int.): when a charged particle crosses the boundary between two media with different speeds of light (different “refractive index”), e.m. radiation is emitted -- “transition radiation” amount of radiation grows with (energy/mass); bremsstrahlung (= braking radiation) ( ...
Laser and its applications
... energy levels E1, E2, E3,….let us fitt our attention to two levels E1& E2 where E2>E1 we have already seen that the rate of stimulated emission and absorption involving these two levels ...
... energy levels E1, E2, E3,….let us fitt our attention to two levels E1& E2 where E2>E1 we have already seen that the rate of stimulated emission and absorption involving these two levels ...
Name_______________________________________________
... c. Metals are shiny and malleable. d. The shortage of electrons in metals gives them a positive electrical charge. 2. A blacksmith can shape metal into a horseshoe. This shows that the metals is a. ductile b. a good conductor of electricity c. malleable d. a liquid at room temperature ...
... c. Metals are shiny and malleable. d. The shortage of electrons in metals gives them a positive electrical charge. 2. A blacksmith can shape metal into a horseshoe. This shows that the metals is a. ductile b. a good conductor of electricity c. malleable d. a liquid at room temperature ...
Electron-Positron Scattering
... an interpretation of the formula. Each straight line in the diagrams represents an electron (if the arrow points up) or positron (if the arrow points down), with the initial-state particles at the bottom of the diagram and the final-state particles at the top. The wavy lines represent photons, which ...
... an interpretation of the formula. Each straight line in the diagrams represents an electron (if the arrow points up) or positron (if the arrow points down), with the initial-state particles at the bottom of the diagram and the final-state particles at the top. The wavy lines represent photons, which ...
Reporting Category 3: Bonding and Chemical Reactions
... Metallic atoms have few valence electrons and low ionization energies. The bonds holding metallic atoms together in the solid and liquid phases, however, are apparently strong, as metals have fairly high melting and boiling points. A metallic atom may be considered to have a central portion, or core ...
... Metallic atoms have few valence electrons and low ionization energies. The bonds holding metallic atoms together in the solid and liquid phases, however, are apparently strong, as metals have fairly high melting and boiling points. A metallic atom may be considered to have a central portion, or core ...
Electronic Structure - Chemistry Teaching Resources
... These fixed energy levels are what we have always called our electron shells ...
... These fixed energy levels are what we have always called our electron shells ...
PH507lecnote07_mcp3
... 1) It is sensitive to all incident radiation. This may sound contrary to what was stated above, but for spectral line work, or narrow band photometry we want a detector that is only sensitive to the frequencies we are interested in. 2) Slow frequency of operation (typically 10 Hz). As the bolometer ...
... 1) It is sensitive to all incident radiation. This may sound contrary to what was stated above, but for spectral line work, or narrow band photometry we want a detector that is only sensitive to the frequencies we are interested in. 2) Slow frequency of operation (typically 10 Hz). As the bolometer ...
Chapter 40 Problems
... scattered photon? 24. A 0.110-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backward. Find the momentum and the kinetic energy of the electron. 25. A 0.880-MeV photon is scattered by a free electron initially at rest such that t ...
... scattered photon? 24. A 0.110-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backward. Find the momentum and the kinetic energy of the electron. 25. A 0.880-MeV photon is scattered by a free electron initially at rest such that t ...
Bremsstrahlung
Bremsstrahlung (German pronunciation: [ˈbʁɛmsˌʃtʁaːlʊŋ], from bremsen ""to brake"" and Strahlung ""radiation"", i.e. ""braking radiation"" or ""deceleration radiation"") is electromagnetic radiation produced by the deceleration of a charged particle when deflected by another charged particle, typically an electron by an atomic nucleus. The moving particle loses kinetic energy, which is converted into a photon, thus satisfying the law of conservation of energy. The term is also used to refer to the process of producing the radiation. Bremsstrahlung has a continuous spectrum, which becomes more intense and whose peak intensity shifts toward higher frequencies as the change of the energy of the accelerated particles increases.Strictly speaking, braking radiation is any radiation due to the acceleration of a charged particle, which includes synchrotron radiation, cyclotron radiation, and the emission of electrons and positrons during beta decay. However, the term is frequently used in the more narrow sense of radiation from electrons (from whatever source) slowing in matter.Bremsstrahlung emitted from plasma is sometimes referred to as free/free radiation. This refers to the fact that the radiation in this case is created by charged particles that are free both before and after the deflection (acceleration) that caused the emission.