Practice Quiz 4 - more than one in the list)? C, Cl, S, Al,...

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CHM 2046 Quiz 4A Spring, 2005 Answer all questions. 1. a) (3 points) Rank the following in order of decreasing electropositivity. Cu, C, Ca, Cl, Cs The order is ___ > ___ > ___ > ____ > ____ b) (3 points) Rank the following in order of decreasing covalency in the bonding. AsCl 5 , BaCl 2 , TlCl 3 , TlCl, BiCl 3 , The order is ___ > ___ > ___ > ____ > ____ c) (3 points) Rank the following in order of decreasing acidity. CO 2 , NO 2 , CO, N 2 O 5 , BeO The order is ___ > ___ > ___ > ___ > ___ d) (3 points) Rank the following elements in order of decreasing reducing strength. Se, Ge, Tl, Ba, Cs The order is ___ > ___ > ___ > ___ > ___ 2. a) (3 points) Will boron(III) oxide, B 2 O 3 , react with acids, bases or both? Answer below. B 2 O 3 will react with ______ b) (3 points) Write a balanced equation, or balanced equations, for the reaction or reactions in part a) c) (2 points) What are the highest and lowest oxidation states of a group 15 element expected to be possible (even if some are not very stable)? The highest is ___ and the lowest is ___ e) (6 points) Which of the following elements is a metalloid (there may be
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Unformatted text preview: more than one in the list)? C, Cl, S, Al, As, Be, Br, Sb, Se, I, Ge, Sn, Te, P, Bi, Po The metalloid(s) is(are) _________ f) (2 points) The name of H 3 AsO 4 is _________ 1 g) (2 points) The name of H 2 TeO 3 is _________ h) (2 points) The name of NaBrO 3 is _________ 3. (2 points each) a) What is the condensed configuration of the element rhodium (Rh) ? The answer is ______________ b) What is the condensed configuration of the element molybdenum (Mo)? The answer is ______________ c) What is the d n configuration of iridium(III) (Ir 3+ ): _____ d) What is the maximum possible oxidation state of tantalum (Ta)? _____ e) At what oxidation state is the oxide of chromium (Cr) amphoteric? ____ 4) (16 points) Draw all possible isomers of the octahedral complex [MA 2 B 2 C 2 ], where A, B and C are monodentate (unidentate) ligands. Indicate which, if any, are optical isomers (enantiomers). 2...
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Practice Quiz 4 - more than one in the list)? C, Cl, S, Al,...

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