Can Be Used to Predict That a Gaseous Carbon Atom
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AP Chemistry Unit 3 - Elements PowerPoint Presentation
AP Chemical science Unit iii - Elements
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AP Chemical science Unit 3 - Elements
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AP ChemistryUnit 3 - Elements Lesson 11 – Orbital Representations Book Section: half dozen.4-vi.9
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Orbital Diagrams • Each box in the diagram represents one orbital. • Half-arrows represent the electrons. • The direction of the arrow represents the relative spin of the electron.
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Hund's Dominion • For degenerate orbitals, the everyman free energy is attained when the number of electrons with the aforementioned spin is maximized. • Brand all degenerate orbitals half-filled before adding the reverse spin electrons. • Half-filled subshells (p3, d5), are especially stable.
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Magnetism • Magnetism results from unpaired electrons in the ground land. • When there are multiple unpaired electrons (like in fe), this results in a ferromagnet, or permanent magnet, or a paramagnet, or temporary magnet.
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1984 MC #66 • Ca, 5, Co, Zn, Equally • Gaseous atoms of which of the following elements to a higher place are paramagnetic? • Ca and Equally • Zn and As • Ca, V, and Co • V, Co, and Every bit • V, Co, and Zn
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1984 MC #66 • Ca, V, Co, Zn, As • Gaseous atoms of which of the following elements above are paramagnetic? • Ca and As • Zn and As • Ca, V, and Co • V, Co, and Every bit – 42% correct, medium • V, Co, and Zn
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1994 MC #1-four • Heisenberg doubt principle • Pauli exclusion principle • Hund's rule (principle of maximum multiplicity) • Shielding outcome • Wave nature of affair 1) Can be used to predict that a gaseous carbon atom in its ground state is paramagnetic. 2) Explains the experimental miracle of electron diffraction 3) Indicates that an atomic orbital can hold no more 2 electrons 4) Predicts that information technology is impossible to determine simultaneously the exact position and exact velocity of an electron.
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1994 MC #1-4 • Heisenberg uncertainty principle • Pauli exclusion principle • Hund's rule (principle of maximum multiplicity) • Shielding result • Moving ridge nature of thing 1) Tin can exist used to predict that a gaseous carbon atom in its footing land is paramagnetic. C – 32% right, difficult 2) Explains the experimental phenomenon of electron diffraction Due east – 38% correct, difficult 3) Indicates that an atomic orbital tin can hold no more than than two electrons B - 44% correct, medium 4) Predicts that it is incommunicable to determine simultaneously the verbal position and exact velocity of an electron., A – 82% correct, very easy
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1999 MC #5-viii • 1s ___ 2s ___ • 1s ___ 2s ___ • 1s ___ 2s ___ 2p ___ ___ ___ • 1s ___ 2s ___ 2p ___ ___ ___ • [Ar] 4s ___ 3d ___ ___ ___ ___ ___ 5) Represents an cantlet that is chemically unreactive 6) Represents an atom in an excited state vii) Represents an cantlet that has four valence electrons viii) Represents an cantlet of a transition metal
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HW: 6.60, 62, 63, 64, 66 • Next Week: • Thursday– Periodic Trends • Friday – Radioactivity & Nuclear Equations • 10/18 – Gravimetric Analysis of a Chloride Salt Due • ten/20 – Elements Exam • 10/21 – Problem Set 2 Due
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