E4_F01 - page 3 ___ pts NAME: __________________________...

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Unformatted text preview: page 3 ___ pts NAME: __________________________ Chemistry 100 Associate Professor: Dr. Gergens 1. (2) E4 10/3 FALL 2001 Circle all Bohr models that are written correctly for the ground state for a given atom: click here for the answer • • 2He • • • • • • 6C • 1H •• • ••• ••• •• 12 Mg 2. click here for the answer a. The 3rd level has ________ sublevels named ________. (5) Complete: b. A f sublevel has ________ orbitals and can hold a maximum of ________ electrons. c. A 5p orbital can hold a maximum of ________ electrons. 3. (9) Indicate the symbol or element with the characteristic given below: click here for the answers a. Electron configuration 1s2 2s 2 2p6 3s 2 3p4 e. The element in the second period most likely to lose two electrons. b. Circle the maximum number of electrons that can f. fill a d sublevel. Circle the orbital that is highest in energy 2 c. 6 10 14 32 g. 1s 2s 3s Circle the smallest i on: Circle the largest i on: sulfide ion d. and o xide ion h. A l 3+ Mg2+ Na+ Circle the most electronegative ion: Circle the smallest atom: sulfur i. and oxygen Al Mg Na Circle the dipole that is correctly drawn for the C—O bond δ + C—O δ δ + C—O δ- δ - C—O δ+ δ - + C—O δ 4. (4) Describe Rutherforsd's experiment and how his results lead to our common understanding of the atom and its subatomic structure. click here for the answers page 3 ___ pts NAME: __________________________ Chemistry 100 Associate Professor: Dr. Gergens 1. (2) E4 10/3 FALL 2001 Circle all Bohr models that are written correctly for the ground state for a given atom: Click here to go back this the excited state for hydrogen, He has 2 e in first shell • • 2He C has 2 e in first shell, then 4 in second shell 2. (5) Complete: a. • • • • • • 6C • 1H this structure is missing one e •• • ••• ••• •• 12 Mg 32 The 3rd level has ________ sublevels named ________. s, p, d Click here to go back b. 14 7 A f sublevel has ________ orbitals and can hold a maximum of ________ electrons. 2 A 5p orbital can hold a maximum of ________ electrons. c. 3. (9) Indicate the symbol or element with the characteristic given below: a. Electron configuration 1s2 2s 2 2p6 3s 2 3p4 e. The element in the second period most likely to lose two electrons. has 16 electrons, must be sulfur b. Circle the maximum number of electrons that can f. fill a d sublevel. Be, Beryllium Circle the orbital that is highest in energy 2 c. 6 10 14 32 g. 1s 2s 3s Circle the smallest i on: Circle the largest i on: sulfide ion d. and o xide ion h. A l 3+ Mg2+ Na+ Circle the most electronegative ion: Circle the smallest atom: sulfur i. and oxygen Al Mg Na Circle the dipole that is correctly drawn for the C—O bond δ + C—O δ δ + C—O δ- δ - C—O δ+ δ - + C—O δ 4. (4) Describe Rutherforsd's experiment and how his results lead to our common understanding of the atom and its subatomic structure. E.1911Ernst Rutherford 1.Directed heavy positively charged helium nuclei, He (II), toward a very thin sheet of gold foil. 2.Discovered a majority of helium nuclei, called alpha particles, passed through the foil. 3.A few particles showed small angles of deflection. 4.But one out of 25,000 helium nuclei bounced backwards toward their source. ...
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