[CHM113] 113DQ9

[CHM113] 113DQ9 - CHM 113 Discussion Quiz 9 (10 pts) Name_...

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CHM 113 Name_____________________ Discussion Quiz 9 (10 pts) Section____________________ 1. What is the oxidation state for each element in the following compounds? (2pt) a. LiH b. KO 2 2. Name two characteristics of non-metals. (2 pt) 3. Are the following bonds polar, non-polar, or ionic? Draw the appropriate electronegativity vector if the bond is polar. (3 pt) a. N-N b. C-O c. Na-Cl 4. What is an allotrope? (1 pt) 5. What are the trends for electronegativity? (L -> R and B -> T) (1pt) 6. What is the most reactive alkali metal? (1pt)
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CHM 113 Name_____ Answers _________ Discussion Quiz 9 (10 pts) Section____________________ 1. What is the oxidation state for each element in the following compounds? (2pt) a. LiH Li= +1 H= -1 b. KO 2 K= +1 O= - 1/2 (each element is worth ½ point) 2. Name two characteristics of non-metals. (2 pt) vary greatly in appearance (s,l,g), non-lustrous/various colors, brittle (hard or soft), poor conductors, nonmetal compounds are molecular --- these are the answers I am primarily looking for. If others are given regarding the trends, the will also be accepted. 3. Are the following bonds polar, non-polar, or ionic? Draw the appropriate electronegativity vector if the bond is polar. (3 pt) a. N-N Non-polar (one point) b. C-O Polar the arrow should go from C to O (half point for polar, half point for the arrow) c. Na-Cl Ionic 4. What is an allotrope? (1 pt) Different forms of the same element in the same state. 5. What are the trends for electronegativity? (L -> R and B -> T) (1pt) Increasing from left to right. Increasing from bottom to top. (1/2 point for each direction) 6. What is the most reactive alkali metal? (1pt) Francium
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CHM 113 Name_____________________ Discussion Quiz 9 (10 pts) Section____________________ 1. What is the oxidation state for each element in the following compounds? (2pt) a. LiH b. Na
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This note was uploaded on 08/12/2008 for the course CHM 113 taught by Professor Anbar during the Spring '06 term at ASU.

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[CHM113] 113DQ9 - CHM 113 Discussion Quiz 9 (10 pts) Name_...

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