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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James ISBN: 9780198769866 2042

Solution for problem P12B.3 Chapter 12B

Atkins' Physical Chemistry | 11th Edition

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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James

Atkins' Physical Chemistry | 11th Edition

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Problem P12B.3

The Lewis structure of \(\mathrm{SF}_{4}\) has four bonded pairs of electrons and one lone pair. Propose two structures for \(\mathrm{SF}_{4}\) based a trigonal bipyramidal coordination at S, and a further structure based on a square pyramid. For each structure, describe the expected form of the \({ }^{19} \mathrm{~F}\) NMR spectrum, giving your reasons. Hint: You do not need to consider possible interaction with the S nucleus.

Text Transcription:

SF_4

^19F

Step-by-Step Solution:
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Week 1 Review Syllabus Significant figures (should be background knowledge) Periodic table (familiarize yourself) Group 1 - Alkali metals - very reactive Group 2 - Alkaline Earth Metals Group 16 - Chalcogens Group 17 - Halogens - also very reactive Group 18 - Noble gases - unreactive Earth’s crust 45.5% O 27.2% Si 2.8% Mg 4.7% Ca 6.2% Iron 8.3% Al 5.3% others Atomic Elements ● Monatomic - 1 atom ○ Primarily metals and noble gases ○ Ex. Na, Mg, Fe, Ni, Al, He, Ne Molecular Elements Made of same non-metallic elements ● Homonuclear diatomic ○ same element, 2 atoms ○ Ex. H​ , 2​ ,2​​ 2​F​2​ C2​ , 2​​2, I​ Compounds Different elements Molecular compounds/covalent compounds ● heteronuclear diatomic (different elements, 2 atoms) ○ Ex. HCl, CO, NO ● Heteronuclear polyatomic (different elements, 2+ atoms) ○ Ex. H​ O, CO​ , NO​ 2​ 2​ 2 Ionic compounds Not molecules - usually contain metallic cations and non-metallic anions; varies Ex. NaCl, Fe​ 2​ 3​CaCO​ 3 Nomenclature Common names H2O - Water NH3 - ammonia CH4 - methane Systematic 1) Element with lower group # is first word (unless halogen/oxygen is present → halogen comes first) & second element with root and “-ide” 2) If both elements are in same group, higher period is first 3) Greek numera

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Chapter 12B, Problem P12B.3 is Solved
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Textbook: Atkins' Physical Chemistry
Edition: 11
Author: Atkins, Peter; De Paula, Julio; Keeler, James
ISBN: 9780198769866

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