9) HCCCO₂H, is an organic hydrocarbon. a) Draw a geometrically accurate structure so that the formal charge of each atom is zero identifying the bond angles (Draw it BIG!). b) Identify the hybridization about each atom (not H) forming a bond c) How many o or n bonds are there in this molecule d) The combustion of the hydrocarbon produces carbon dioxide and water in the gaseous state. Use average bond enthalpies to determine enthalpy of reaction

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B C D H chemical symbol, chemical formula or Lewis structure H | HC H | N H- HIC - C C - H Η H HIC C I | H H — — - H Cr O-H Ar :O: O HIC - H C H - H - X boiling point (Choose one) ◊ (Choose one) (Choose one) (Choose one) ✪ S

a) From the set of Lewis structures shown below, determine the best Lewis structure for TeFs. Please note that formal charges are intentionally left out of the structures. *0 O Structure A Linear b) What is the molecular geometry around the tellurium atom for the structure selected in parta)? Bent 0000 O Tetrahedral O Trigonal Planar O Trigonal Pyramidal Square Planar Seesaw O Square Pyramidal O T-shape O Trigonal Bipyramidal Octahedral Structure B sp c) What is the hybridization of the tellurium atom for the structure chosen in part a)? sp² spl Structure C "p²³d² O sp³d² Structure D sp'd O apd sp'd² d) Do any of the atoms in the structure chosen in part a) violate the octet rule? O Yes O No

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. chemical symbol, chemical formula or Lewis structure substance boiling point H :0: .. A Н— С C - N - CH, (Choose one) Br CH, CaBr, (Choose one) v В CH3 CH3 -N - Choose one) CH3 H н :0: H D (Choose one) v Н — С — С — С — Н н н H

||| = 43°F Clear O ELECTRONIC STRUCTURE AND CHEMICAL BONDING Predicting the arrangement of electron groups around the centr... Answer the questions in the table below about the shape of the chlorine pentafluoride (CIF) molecule. How many electron groups are around the central chlorine atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central chlorine atom? (You may need to use the scrollbar to see all the choices.) Explanation Check 10 (choose one) (choose one) linear bent T-shaped trigonal planar trigonal pyramidal square planar square pyramidal tetrahedral sawhorse trigonal bipyramidal octahedral Q Search 0/3 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center www.OTAPETY Accessibi

What are the angles a and b in the actual molecule of which this is a Lewis structure? H H H C H a a = C b = ⁰ C H Note for advanced students: give the ideal angles, and don't worry about small differences from the ideal that might be caused by the fact that different electron groups may have slightly different sizes. H X

Consider the following ion: BrO3¯. a) Show the full electron configuration for Br. b) Draw the most correct Lewis structure for BrO3¯ and briefly explain why your Lewis structure is correct. c) If the structure is stabilised by resonance, draw at least one of the possible resonance forms. If it is not stabilised by resonance, briefly explain why. d) What is the electronic geometry of BrO3-? What is its molecular shape? e) Does BrO3 have a dipole moment? Briefly justify your answer. f) On average, would you expect IO3¯ to have longer or shorter bonds than BrO3¯? Briefly explain your answer. g) Which of the following molecules would you expect to have the lowest vapour pressure? Briefly explain your choice. Br HO HO. Br- Compound A Compound B Compound C h) What is the molecular formula for Compound C? What is the empirical formula for Compound C?

Predicting deviations from ideal bond angles.

Predicting deviations from ideal bond angles Consider the carbonate (co-). anion. What is the central atom? Enter its chemical symbol. How many lone pairs are around the central atom? What is the ideal angle between the carbon-oxygen bonds? Compared to the ideal angle, you would expect the actual angle between the carbon-oxygen bonds to be ... 0 口。 (choose one) (choose one) about the same bigger smaller

Choose the best Lewis structure for OCN. (It will help to work out the missing formal charges for the atoms in these different structures) [Image description: Lewis structure A has a C atom singly bound to a O atom and a N atom. There are three electron pairs on O and three electron pairs on N. Lewis structure B has a C atom singly bound to a O atom and triply bound to a N atom. There are three electron pairs on O and one electron pair on N. Lewis structure C has a C atom triply bound to a O atom and singly bound to a N atom. There is one electron pair on O and three electron pairs on N. Lewis structure D has a C atom doubly bound to a O atom and a N atom. There are two electron pairs on O and two electron pairs on N.] :0-c-N: :0-c=N: :0=C-N: o=c=N: A B Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b В C C d D