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Chem 219 Exam 1: Questions & Detailed Solutions
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Chem 219 Exam 1: Questions & Detailed Solutions
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Chem 219 Exam 1: Questions & Detailed SolutionsOn a piece of scratch paper, write out the Lewis Dot Diagram for each of the
indicated, elements and then complete the following table for each: 1)
Flourine, 2) Phosphorus, 3) Lithium, 4) Nitrogen, 5) Sulfur Right Ans - 1)
Flourine: 7, 3, 1, 1
2) Phosphorus: 5, 1, 3, 3
3) Lithium: 1, 0, 1, 1
4) Nitrogen: 5, 1, 3, 3
5) Sulfur: 6, 2, 2, 2
Classify the bonding between the given pairs as ionic, covalent, polar covalent,
or purely covalent. Right Ans - 1) Br-H: 0.7, polar covalent
2) K-C: 1.7, polar covalent
3) N-O: 0.5, covalent
4) C-C: 0, Covalent
5) Na-F: 3.0, Ionic
What is the relationship between the compounds shown? Right Ans - These
are constitutional isomer because they have the same molecular formula but
different connectivity.
What is the molecular formula for the indicated structural formula Right
Ans - MF: C10H16
What are the formal changes on each of the indicated atoms in the
nitrobenzene molecule Right Ans - a) -1
b) +1
c) 0
d) 0
True of False: It is okay for resonance structures to have different numbers of
electrons from once another if the formal charges do not balance out to the
same overall total Right Ans - False
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