110_Fa10_Ex1_A

110_Fa10_Ex1_A - CHEMISTRY 110 EXAM 1 FORM A 1 What are the...

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Unformatted text preview: CHEMISTRY 110 EXAM 1 SEPTEMBER 20, 2010 FORM A ----------------------------------------------------------------------------------------- 1. What are the correct numbers of protons, neutrons and electrons in a 39 K + ion? p n e A. 20 19 18 B. 20 19 19 C. 19 20 18 D. 19 20 19 E. 20 19 20 ----------------------------------------------------------------------------------------- 2. Which set of quantum numbers is not permissible for an electron in an atom? A. n = 6, ! = 1, m ! = 0 B. n = 3, ! = 2, m ! = 3 C. n = 3, ! = 2, m ! = ! 2 D. n = 1, ! = 0, m ! = 0 E. n = 4, ! = 3, m ! = ! 3 ----------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------- 3. Of the atoms below, which one is the most electronegative? A. Si B. Cl C. Rb D. Ca E. S ----------------------------------------------------------------------------------------- 4. Which of the following ionization processes requires the most energy? A. He ! He + + e " B. Be ! Be + + e " C. Na ! Na + + e " D. Mg ! Mg + + e " E. Fe ! Fe + + e "----------------------------------------------------------------------------------------- 5. Which of the following statements is true? A. Ultraviolet light has a longer wavelength than infrared. B. Red light has a higher frequency than blue light. C. The wavelength of visible light is directly proportional to its frequency. D. X-ray has lower energy than microwave. E. Radio waves have a longer wavelength than visible light. ----------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------- 6. Which of the following could be an orbital diagram for a neutral carbon atom in an excited state? 1s 2s 2p A. ( #$ ) ( #$ ) ( # ) ( # ) ( ) B. ( #$ ) ( # ) ( # ) ( # ) ( # ) C. ( #$ ) ( #$ ) ( # ) ( # ) ( # ) D. ( #$ ) ( #$# ) ( # ) ( ) ( ) E. ( #$ ) ( #$ ) ( # ) ( ) ( ) ----------------------------------------------------------------------------------------- 7. How many electrons have the quantum number m ! = 0 in the ground-state electron configuration of neon (Ne)? A. 2 B. 4 C. 6 D. 8 E. 10 ----------------------------------------------------------------------------------------- 8. What is the energy change when an electron in a hydrogen atom is promoted from n = 2 to n = 5? A. –276 kJ B. –6.45 " 10 ! 19 J C. 6.45 " 10 ! 19 J D. –4.58 " 10 ! 19 J E. 4.58 " 10 ! 19 J ----------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------- 9. Consider the highest energy electron in the ground-state electron configuration of barium (Ba). Identify the configuration of barium (Ba)....
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This note was uploaded on 01/18/2012 for the course CHEM 110 taught by Professor Hofmann,brucerob during the Fall '08 term at Penn State.

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110_Fa10_Ex1_A - CHEMISTRY 110 EXAM 1 FORM A 1 What are the...

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