Which of the following species is polar?
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Chapter 9 Solutions
Chemistry
- 4. (a) Draw the shape of the atomic valence orbitals formed by the overlaping of two fluoride 2p atomic orbitals. (b) Draw the molecular orbital diagrams for F2 and F2*. Identify their bond order and magnetic properties. (c) An unstable nucleus exhibit radioactivity. (i) Explain how the number of protons and neutrons in a radioactive nucleus can be used to predict its probable mode decay. (ii) Illustrate your answer in (i) with a schematic graph.arrow_forwardThe Electron pair geometry, molecular geometry and Hybridization for NCl3 is (a) Tetrahedral, Trigonal pyramidal, sp^3 (b) Trigonal planar, Bent, sp^2 (c) Bent, Trigonal planar, sp^2 (d) Nonearrow_forwardIn addition to Al₂Cl₆, aluminum forms other specieswith bridging halide ions to two aluminum atoms. One suchspecies is the ion Al₂Cl₇. The ion is symmetrical, with a 180° Al−Cl−Al bond angle.(a) What orbitals does Al use to bond with the Cl atoms?(b) What is the shape around each Al?(c) What is the hybridization of the central Cl?(d) What do the shape and hybridization suggest about the pres-ence of lone pairs of electrons on the central Cl?arrow_forward
- Predict the electron pair geometry and the molecular structure of each of the following molecules or ions:(a) SF6(b) PCl5(c) BeH2(d) CH3+arrow_forward(a) Why do stable xenon fluorides have an even number of F atoms? (b) Why do the ionic species XeF₃⁺ and XeF₇⁻ have odd numbers of F atoms? (c) Predict the shape of XeF₃⁺ .arrow_forwardThe sulfate ion can be represented with four S-O bonds or with two S-O and two So=O bonds.(a) Which representation is better from the standpoint of formal charges?(b) What is the shape of the sulfate ion, and what hybrid orbitals of S are postulated for the σ bonding?(c) In view of the answer to part (b), what orbitals of S must be used for the π bonds? What orbitals of O?(d) Draw a diagram to show how one atomic orbital from S and one from O overlap to form a π bond.arrow_forward
- The illustrations below depict differences in orbital hy-bridization of some tellurium (Te) fluorides. (a) Which depictsthe difference, if any, between TeF₆(left) and TeF₅(right)? (b) Which depicts the difference, if any, between TeF₄(left) and TeF₆(right)?arrow_forward(a) Draw the best Lewis structure(s) for the nitrite ion, NO2-.(b) With what allotrope of oxygen is it isoelectronic?(c) What would you predict for the lengths of the bondsin NO2- relative to N¬O single bonds and doublebonds?arrow_forwardWhat are the electron-pair geometry and the molecular structure of each of the following molecules or ions?(a) ClF5(b) ClO2−(c) TeCl42−(d) PCl3(e) SeF4(f) PH2−arrow_forward
- Consider the SCl2 molecule. (a) What is the electron configuration of an isolated S atom? (b) What is the electron configuration of an isolated Cl atom? (c) What hybrid orbitals should be constructed on the S atom to make the S-Cl bonds in SCl2 ? (d) What valence orbitals if any, remain unhybridized on the S atom in SCL2 ?arrow_forwardBorane (BH3) is unstable under normal conditions, but it has been detected at lowpressure.(a) Draw the Lewis structure for borane.(b) Draw a diagram of the bonding in BH3, and label the hybridization of each orbital.(c) Predict the H¬B¬H bond anglearrow_forward(a) What are the C— C— C bond angles in diamond?(b) What are they in graphite (in one sheet)? (c) Whatatomic orbitals are involved in the stacking of graphitesheets with each other? The solid wedges in the figure indicate bonds from carbonthat come out of the plane of the page; the dashed wedgesindicate bonds that lie behind the plane of the page.(a) What is the hybridization of orbitals at each carbonatom? What angles do you expect between the bonds?(b) Now imagine that the polymer is polypropylenerather than polyethylene. Draw structures for polypropylenein which (i) the CH3 groups all lie on thesame side of the plane of the paper (this form is calledisotactic polypropylene), (ii) the CH3 groups lie on alternatingsides of the plane (syndiotactic polypropylene),or (iii) the CH3 groups are randomly distributedon either side (atactic polypropylene). Which of theseforms would you expect to have the highest crystallinityand melting point, and which the lowest? Explainin terms of…arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning