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Get Full Access to Atkins' Physical Chemistry - 11 Edition - Chapter 10a - Problem P10a.1
Get Full Access to Atkins' Physical Chemistry - 11 Edition - Chapter 10a - Problem P10a.1

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ISBN: 9780198769866 2042

## Solution for problem P10A.1 Chapter 10A

Atkins' Physical Chemistry | 11th Edition

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Atkins' Physical Chemistry | 11th Edition

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Problem P10A.1

List the symmetry elements of the following molecules and name the point groups to which they belong: (a) staggered $$\mathrm{CH}_{3} \mathrm{CH}_{3}$$, (b) chair and boat cyclohexane, (c) $$\mathrm{B}_{2} \mathrm{H}_{6}$$, (d) $$\left[\operatorname{Co}(\mathrm{en})_{3}\right]^{3+}$$, where en is 1,2-diaminoethane (ignore its detailed structure), (e) crown-shaped $$S_{8}$$. Which of these molecules can be (i) polar, (ii) chiral?

Text Transcription:

CH_3CH_3

B_2H_6

Coen_3^3+

S_8

Step-by-Step Solution:
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CHM115 Week 1 First class (Jan.9) Professor Ramachandran TA office hours (WTHR 116C) Notices -Do homework online -The recitation will include the prelab portion, so you must be there! -Remember to read book before class, he gave the page number in the review packet and notes on blackboard Course grade -Weekly Homework 14 in total, each worth 10 points -Preerwise assignment (to give questions to your classmates) You will drop one lab in 11 and have two extra credits exercise each got 10 points -On class Answer Iclicker questions, correct one, one extra point Extra help after class -Supplemental instruction Every Tuesday Thursday 5:30-6:30 (HCRN 1145) First week is in Shreve Henry office hour is Wednesday 12:30 to 1:30 -Science Help center Shreve Hall Jade room Tuesday, Thursday 7-10pm -Piazza for homework help (online) Second Class (Jan. 11) General Chemistry review Reading for 16th 2.5-2.9,3.1-3.4 Chemists Make molecules and materials -Pharmaceuticals -Polymers -Energy materials-batteries Analyze molecules and materials Scientific Process Observe—hypothesize—experiment—model -If you know the phenomena then you can make predictions Neutral Atom -mostly empty space -Positive nucleus-negative electrons Isotopes (equal place) -Mass number (protons+neutrons) is different (on the top) -But atomic number(protons) is the same Ions Cation -Positive ion (electrons remove) Anion -Negative ion (electrons add) Gas- stable 18 of them are stable in the standard condition -Atoms combine together to form molecules -Reaction by themselves or with other to create new molecules

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