test9tro - Chapter 9 Tro 1. Bromine tends to form simple...

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Chapter 9 Tro 1. Bromine tends to form simple ions which have the electronic configuration of a noble gas. What is the electronic configuration of the noble gas which the bromide ion mimics? A) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4p 6 B) 1s 2 2s 2 2p 6 3s 2 3p 6 4p 6 4d 10 C) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 4p 6 D) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 E) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 2. Which one of the ions below possesses a noble gas configuration? A) Fe 3+ B) Sn 2+ C) Ni 2+ D) Ti 4+ E) Cr 3+ 3. The valence electrons in the potassium ions present in potassium nitrate are A) the 2p electrons only B) the 3s electrons only C) the 3s and 3p electrons only D) the 3p electrons only E) there are no valence electrons in the potassium ions in the compound above 4. Which one of the ions below possesses a noble gas configuration? A) Fe 3+ B) Ni 2+ C) Sc 3+ D) V 3+ E) Cr 3+ 5. The atoms in the oxygen molecule, O 2 , are held together by A) a single covalent bond B) a double covalent bond C) a triple covalent bond D) an ionic bond E) a magnetic dipole bond Page 1
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6. Which one of the following bonds is the most polar one of the set? A) H—C B) H—N C) H—P D) H—O E) H—Se 7. Draw the Lewis structure for the H 2 CO molecule. Based on this structure, the correct number of polar bonds and non-polar bonds is
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This note was uploaded on 11/15/2010 for the course CHEM 161 taught by Professor Casaschi,a during the Fall '08 term at University of Hawaii, Manoa.

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test9tro - Chapter 9 Tro 1. Bromine tends to form simple...

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